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British term: Usually lunch or "a lunch", but sometimes a snack. Esp. Brit. Military.
I'll see you at tiffin - they're serving nimbu pani!
by d.n. citoyen February 02, 2015
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Aug 11 Word of the Day
A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.
"My boyfriend has a total case of brain worms. He told me the cat was bugged so the Feds could listen in on us having sex..."

or

"You totally stumbled over that entire sentence. Can't speak English all of a sudden? What, do you have brain worms?"
by _Jez_ October 03, 2009
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3
A small town in Ohio, yet when you leave it no other place can live up to it.
have you ever been to Tiffin?
Yeah, its so boring there
What are you talking about? Its an awesome town!
by roverdude December 01, 2010
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4
When a man has been emasculated so much he might as well be called tiffany.
Dude, Jennifer just tiffined Matt with that line.
by Lathentar April 23, 2006
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5
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
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6
A controlling often overweight woman often residing in Great Britain, usually in comfortable managerial roles. They typically have slimmer partners with whom they are possessive.
She’s such a tiffin
by Terrytibbs July 21, 2021
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