A person with a Cleft Lip.
The reason being when people are born with the condition "Cleft Lip", once the persons lip has been operated on it looks like a lions upper lip.
First Guy: You know that guy Mick Harden?
Second Guy: No? Whos that?
First Guy: You know him ol' Lion Lips!
Second guy: Oh yeah! I think he has the aids too!!
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