What's on your mug?

it means probably not a short form used by many people originating from the peterborough area

when referring to someone writing your essay for you Oh, yeah, she'll prolly write that for him

By ginger snapper

Probably

It will prolly rain

By *sid*

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

1. (adv) With Certainty and easy to believe. 2. (adv) With high probability. ETYMOLOGY: 1990s alteration of probably

1 "He will prolly go out with the beautiful girl." 2 "A Dinosaur will prolly never eat a human."

By Theperm

a short word for all u lazy peeps who never feel like saying probably...

I will prolly be there tonight.

By reece&angel97