What's on your mug?

To playfully touch someone on the nose (or other body part) with affectionate or mischievous intentions.

Rob: Hey handsome. Boop! Tyler: Stahhhp Rob: Big hugs. —— Tyler: Rant Rob: Boop! Tyler: {throat punch}

By hokiee

The sound you make when you touch your index finger onto another person's nose.

Ella's nose is so good to boop with.

By Non of Yo Bidness

A monotone fart, usually medium in pitch, and average in length.

Booping is the most common fart.

By Artsicle

When grabbing your girlfriends butt, one simply says "boop"

Before I leave just one more boop *grabs butt*, *boop*

By wetshoes

Is a adorable little noob that thinks they are good at sniping while they aren’t. They are very big noob.

Aerith is a boop.

By GoofInHiding