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1.
Another word to describe someone with a disgusting poorly grown mustache.
"Haha wow look at Rafis chocolate milk mustache!" - Bill
"Thats hair dude" - Geoff
"Damn that kid has one seriously crusty mudlip" - Bill
by bill (omgwtfywontudie) November 17, 2007
 
2.
a derogatory term referring to an african american.
Father says to daughter: You better not be hangin' 'round them mud lips.
by KraigeKrumbly May 29, 2011
 
3.
When a partner french kisses the others anus and eats their crap.
John: "Brah! I've done mud lips with my girlfriend yesterday!"

Brah: "I hope you enjoyed your dinner"
by Greg Zorin September 23, 2008