You would say or write Prolly if you are talking or typing fast. Mostly used in an email or IM to someone that you really don't care if you spell correctly or not.
He is prolly going to jail
by Brenda Kay June 07, 2007

by SwaggieMcsweg January 24, 2015

by Avgpeen12 October 24, 2011

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 November 28, 2014

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)
Person 2: "Yeah man, I prolly wanna do that. Destroying my body is fun!" (Note the sarcasm)
by camper12 December 29, 2014

Short way of saying probably. Lazy people or people that just can't spell "probably" will use this shortened version.
by guavaava June 23, 2018

A shortened version of "probably." Known to be used by Tyler Joesph, the all amazing smol bean of Twenty One Pilots.
Person 1 - Yo, will you go see that new horror movie that's out?
Person 2 - Yeah, I prolly will!
Person 1 - Okay, see ya there!!
Person 2 - Yeah, I prolly will!
Person 1 - Okay, see ya there!!
by penceyprep June 17, 2016
