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A mushroom cloud is a distinctive fiery mushroom-shaped cloud of condensed water vapor or debris resulting from a very large explosion. They are most commonly associated with nuclear explosions, but any sufficiently large blast will produce the same sort of effect. They can be caused by powerful non-nuclear weapons like the GBU-43/B Massive Ordnance Air Blast bomb. Volcano eruptions and impact events can produce natural mushroom clouds. Mushroom clouds are formed by many sorts of large explosions under earth gravity, near the ground. Mushroom clouds form as a result of the sudden formation of a large mass of hot, low-density gases near the ground creating a Rayleigh-Taylor instability. The mass of gas rises rapidly, drawing up a column of additional smoke and debris in the center to form its "stem". The mass of gas eventually reaches an altitude where it is no longer of lower density than the surrounding air and disperses, forming the "head". Nuclear mushroom clouds are often also accompanied by short-lived vapor rings around the stem, called "Wilson clouds". These are created by the blast wave causing a sudden drop in the surrounding air temperatures, causing water vapor in the air to condense around the explosion cloud's "stem". Mushroom clouds cannot form after an explosion high in the air, under water, or in space. In space the explosion would be somewhat spherical.

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The Urban Dictionary Mug

Ceramic mug (11 oz)
Printed on-demand just for you
Dishwasher safe
Microwave safe
Word on front, definition on back
Comfortable handle
Every order personally reviewed
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The wife absolutely loved it for her birthday

Eva P.Nov 10
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Review by Declan  K.

it was the best and it was so worth the 10000000000 dollars

Declan K.Nov 10

Can we really send one to Trump? That's where mine is going. Anyone who gets it will see it as a compliment, I'm sure. Love my mug and love that new "urban dictionary" term: Celebritrash. It'll be in the mainstream dictionaries next week.

Karen PeltierNov 9

My friend saw the message on the cup ordered at a mutual friends house. We think it’s hilarious so had to put it on a coffee cup. Funny, great Christmas present. If she can’t use in public she can always use at home for pens and pencils on her desk!

Donna P.Nov 8
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Bought the "Bump Down" mug for my boyfriend, he thought it was the greatest and couldn't believe I'd actually found something with the phrase on it!

Denise N.Nov 8
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Great mug but i can't manage to get it out of my asshole again

P P.Nov 8
Review by Doug S.

First heard the term “Cheddar Headed” from the song Feel Good by the Gorillaz. Had to look it up and found the definition hilarious and at times very true! So......had to have it! Took it to work and it definitely made an impression. Hahaha!

Doug S.Nov 8
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This was purchased as a gift , and it describes the recipient perfectly . It arrived sooner than expected, and I am very impressed with the quality .

Dian L.Nov 8
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The mug I ordered was exactly as described on the site. The shipping was fast as well. I will buy from these people again.

Dominic C.Nov 8
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Cute mug, arrived promptly in great condition. I like how you can choose background color & change wording. Will feel cheerful when drinking my coffee in this :)

Patrice S.Nov 7
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Heavenly Mug This mug has been sent from the heavens. I'm too broke to buy it. But one day... I will. I will be mugged, dammit!

AndreaNov 6

Why am I here? I don't know how I got here, but I can't stop writing weird things on the cup...😅 Help me. I have a test to study for. A family. Also, if I wasn't broke I would buy 10,000 of these mugs. They look highly entertaining. Love this website, and I probably will fail the test. 🙃

LilyNov 6

I took time designing it but wasn't sure, online tools being what they are, that what I was seeing was for sure what I'd get. Very much appreciated the customer service communication which verified that what I'd designed was what I wanted, and the shipping was quick too.

Bryan C.Nov 4
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Item came on time as promised

Rite A.Nov 4
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Came within a week and it's exactly what I ordered, my friend will love it!

Robert S.Nov 4
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Sus cup I bought the sus mug for the sus king Daequan

Tyler BlevinsNov 4

Good quality, packaging shipped well, arrived quickly.

Louise W.Nov 3
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My mug came in broken but Urban Dictionary replaced it at no extra charge!

Javier E.Nov 3
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Excellent mug excellent service

Harry R.Nov 3
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this is the best for coffee and hot coco especially if you make the hot coco in it then pour it on your significant other and do body shots 😋🥱

AddisonNov 2
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