dead space
dead space is air that is inhaled by the body in breathing, but does not take part in gas exchange. Not all the air in each breath is able to be used for the exchange of oxygen and carbon dioxide. About a third of every resting breath is exhaled exactly as it came into the body. In adults, it is usually in the range of 150 mL.1 Because of dead space, taking deep breaths more slowly (e.g. ten 500 mL breaths per minute) is more effective than taking shallow breaths quickly (e.g. twenty 250 mL breaths per minute). Although the amount of gas per minute is the same (5 L/min), a large proportion of the shallow breaths is dead space, and does not allow oxygen to get into the blood.
The Urban Dictionary Mug

Got this mug for my daughter and she was taken a back. I explained to her why it was funny, but she didn't seem to understand. Its been a few days since my daughter has talked to me. I'm positive she loves it! I'm hoping to hear from her soon :)
Arrived before my daughter’s birthday, which was good. Not chipped or cracked, so that was good, too. Ichabod Crane looked good on the ferra color.
Looks great. Made a cool gift. Quick shipping!

It holds liquid, very good
I use it to catch my cum
the mug is really durable, my parents beat me with it and it doesnt break
Love this mug, I like to use it to defecate in which I then feed to my family. 5 stars.
Quick shipping and awesome hysterical product!
I fucked with it for months before i finally ate it.
Great mug! Got a homo mug for a friend's birthday and he adored it. :)
love it

THINGS ARE GETTING A LITTLE WILD AT CAILLOU'S HOUSE!
The thing is amazing. Also everything on the back is true!
Professor - I am loving this ....not all professors are blasted toward intellectualism. I believe smart comes in all different sizes, color, beauty, and personality. I will use this coffee cup proudly. Loving it in Denver. Jax
It was great! Very hard to break and easy to hold! Also very cute

I sent my friend the Wordle URL for her to enjoy. She did her first Wordle and got so excited, she sent me a text including the answer she got. This showed at the top of my screen and I read it - there was no way to un-read it so I was ... wordlefucked for the day!
Solid mug. Funny design. Fair price
My dad hits me with his mug. It's very very durable
I got the Capybara one made by FAUBCOK and it was so good quality!
i loved the mug, gave it to my grandmother on her birthday
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