2 definitions by fina11y

Top Definition
too high to function (THF); orginially called thiff, but happily shortened to tiffin'

(verb)

when you get so twisted that it is impossible to function as a regular human being. Normal activities are impossible to perform due to the fact that you're high like goddamn planes.
1) "Hey man, how was your night?"

"Dude, soo good. I was tiffin' out!"

2) "Can you pick up the food?"

"Nah, I'm tiffin' too hard right now. Sorry!"
by fina11y December 23, 2010
Too High To Fuction (THF)

when you are so baked that you cannot function properly. you cannot perform simple tasks because you are high like goddamn planes.
hahahaah i'm thiff right now
by fina11y December 20, 2010

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