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8.
1. The expression of not wanting to deal with something at the moment, or finding certain things unappeasable.

Origin: Derived from the phrase "Too Far" which had become too long to say due to laziness, leading the use of just the two letters "T" "F", which also, after so long had become two syllables too many, thus eventually leading to "Tiff."

It is often used to replace phrases such as; "Screw that," "Fuck this," "forget about it," etc.
Nick: Hey man, let's go to the library and get our study on.
Carl: Dude, tiff that.

Girlfriend: You never spend enough time with me!
Boyfriend: Tiff this relationship.
by TiffLife November 29, 2011
 
9.
-n/ adj. (syn: Tiffin', Tiffany, Epitiffany).
A tiff is a really bitchy person, a hilariously non-threatening bitch, an argument, cat fight or the like...

Inspirational articles of Tiff:

Breakfast at Tiffany's, Tiffany Co., Any popular girl named Tiffany ever born, teeny boppers, Jennifer Tilly's furry minge. Bob Sagat, Hillary Duff, and S.H.A.G. bait. (syphilis, Herpes, AIDs, gonorrhea)

modern day tiffs: Andrew's, Charlie's, Skylar's, Alex's, Sam's, Tylwhores's
, Joe's, cindy's, Jerions, John jett's, and francos.

Gawds of Tiffin': CAW, CAD, JWP, CDD, CPD, MT, HRCB, APP, CCJCM
Do you see that tranny Doug? Ah! Gawd, he is such a tiff!!!!
by CCJCM (H) August 09, 2013
 
10.
Those petty, small arguements, quarrels, lovers tiffs, wind-ups.
To accompany the saying 'Tiffs, Taffs and Tantrums'.

Tiffs - arguements, quarrels, lovers tiffs.

Taffs - those usual things.

Tantrums - tears, upsets, unloved.
by Long Johns August 03, 2011
 
11.
An awkward and unsuspected passing of gas. Most often among a large group of people who are only acquaintances, or mutual friends.
boy- "last night at your parent's house, i totally passed a tiff."

girl- "i was wondering why you wanted to leave early."
by d000000dwheresmycar July 27, 2010
 
12.
the act of shitting while being fingered. the word "Tiff" can also be used to replace the word "Shit."
John was in the back with his girl when she tiff'd all over.
by dGORk. October 12, 2009
 
13.
Toronto Film Festival. Film festival held in Toronto, Canada.
I had been at TIFF last evening
by Tom725 September 07, 2007
 
14.
Abbreviation: That Is Fucking Funny.
"Wow, a definition of sufa - tiff!"
by The Original Tyler Durden October 27, 2006