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A youngster's prank originating in the playground's of Northern Ireland.It involves sticking a finger up your own anus then stealthily creeping up behind an unsuspecting individual and wiping the shitty finger across his/her top lip.
"Peter was pissing me off so i gave him a shitty lip. That wiped the smile off his face!"
by Coppula eam September 29, 2006
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A term used to berate someone. It alludes to that person’s affinity for licking and/or kissing bare, unwashed assholes.
Nice shot, shitty lips! You totally missed!

You think you're man enough to take me, shitty lips?

Way to fuck everything up, shitty lips!
by MastaRoe April 24, 2011
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