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1.
A word used for the end of a woman's breast or the round object on a mans chest. Another word for nipple. It can be used to offend the opposite sex; or maybe the same sex. It could also be used in oral sex to spice things up in the bedroom. It can be used for anything you like.
David was really annoying Lucy, so she called him a tit end.

Darren was very confused when Chelsea asked him to suck on her tit end whilst he was passionately kissing her neck.

'Yo homie, stop being such a tit end' 'Tit end? You mad bro?!'
by indiegurlla January 02, 2012
 
2.
A generally foolish or undesirable person, with similar meaning to plain old tit when it's used as an insult. Made more popular after it was used in the TV comedy series Green Wing.
"You're such an idiot, you complete and utter tit-end."
by Bortron September 01, 2006