Got a girl back at the crib, just to clean off my dick when I piss
But not really, that was just a joke, who you think I am? Diddy?

from Ski Beatz (Ft. Locksmith & Mac Miller) – Time Goes Lyrics on Rap Genius

Meaning

Diddy is known to be ridiculously rich and lazy. And it would not be surprising if he had a girl at the crib just to clean his dick off after pissing. This joke was first made by Dave Chappelle, from his skit Making the Band(Including the best rapper ever x5, Dylan) where Dave played Diddy, who would be carried everywhere he went. http://www.youtube.com/watch?v=GH8pJXMyGu8

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