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1. tiffin'
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!"
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