Originating from the lion, usually having authority and class, with a very large penis, thus being known as "The F#%kin King of The Jungle"
Pita: Did you see that guy?

Carmen: Yeah, I knew he was a real Deleon when I saw him with that other idiot he walked in with!
by fahQ puto February 13, 2010
an extremely small penis, esp. one that does not stand out past the pubic hair when fully erect.
Marcus always takes his tweezers and magnifying glass with him to the bathroom so he can hold his DeLeon when we urinates.
by and1mcgee October 13, 2006
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