What's on your mug?

Short for probably. Used by only OG mofo's, Cholo's and gangbangers

Dequan: Yo, we gunna do that driveby we talked about earlier Filisha: Prolly

By SwaggieMcsweg

The way fags and fucks say or type the word probably.

If you use prolly in a conversation you probably suck dick.

By Avgpeen12

Short for the term "probably"

It is prolly the case that this word was trademarked by Mariah Wheat against her beautiful wife Amy Green who tried to steal such a magnificent word in attempt to lay claim to inventing it. Boo-yah.

By Seadog92

A sarcastic, colloquially used word, typically used in response to a dumb question.

Person 1: "Hey dude, you wanna do meth tonight?" Person 2: "Yeah man, I prolly wanna do that. Destroying my body is fun!" (Note the sarcasm)

By camper12

Short way of saying probably. Lazy people or people that just can't spell "probably" will use this shortened version.

He is prolly the last person you should be asking for advice.

By guavaava