To urinate in an inappropriate place, especially on a person. Also especially applicable to acts of inappropriate urination fueled by 40 ouncers of malt liquor.
"This is bullshit, dude, I'm gonna do an R Kelly on this fool's Lexus."

"I want to do an R Kelly all over Ann Coulter's face. I bet she'd like it. Bunnnnnggg."
by Angst Boy February 17, 2006
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