Taking a dose of prescription ADD medication (adderall, vyvanse, ritalin, dex) when one is not prescribed as such, and proceeding to do procrastinated schoolwork much more efficiently than if one hadn't taken the medication. Sometimes you can use it to stay up all night typing furiously or studying for exams. Geeking is the academic cousin of Tweaking.

Under the influence of crack cocaine

App-

total fucking cancer save us

To laugh very hard, resembling a geek.
Created in Guelph Ontario.
Also used as geeked... I geeked so hard!

Somebody done a bunch of speed

when someone is so high on cannabis they cant stop laughing becuase its so funny to them.