alt. definition is when a person is high on some drug and is lauhing uncontrollably and/or hysterically
geekin hardcore: I was geekin hardcore when my brother fell for tha girl with no teeth
Also related to tweaking.
When tweaking AND geeking, this time contraction is combined with a feverish hurry and awareness of your own "meth stench," not to mention a belief that what you are doing is of the utmost importance, and is not to be disturbed by anyone.
1- Geek = the state of being amusing or humorous.
2- Geeking = When a person is really fucked up on any kind of drug.
2- Dude, i just dusted a line and took 4 bong rips, im GEEKING!!