Top definition
When a woman Unknowingly touches a man's Semi or Fully erect penis. i.e. his Chubby
Girl: He reached in to give me a hug & all I felt on my leg was his Sir-prize

Guy: Dude, I couldn't fight it any more. So I went in to hug her, Guns Fully Loaded, & gave her a Sir-prize
by Tony_Kush420 August 29, 2011
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2
Tall, sexy, educated, and charming man.
Man, that guy is sure a sirprize.
by PooC April 28, 2011
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