When you’ve been sucking face with someone with stubble and your mouth gets irritated and red.
“We’re you with Jacob last night?”
“What? How did you know?”
“You’ve got major red lip, dude.”
by Lillarkin December 26, 2017
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When going down on a girl and in the process she starts her period, unknown to you.
"Jane forced him to munch the rug last night and he ended up looking like a red lipped ninja."

"Bobby was going down on Sarah when she totally red lip ninja'd him. What a bitch."
by thatoneguyuno May 11, 2010
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When your lips are red from drinking red wine.
Dude, I just drank half a bottle of Merlot, hence the red wine lips.
by alpen19 July 1, 2011
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