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Slang for Penis. Used by The Rubberbandits, a comedy duo from Limerick City in Ireland. Also spelt Silly Bhoy.
-I want to wash my Silly Boy!

-Well, no silly boys are gonna get washed with a set of jocks on!!
by amusingusername December 03, 2010
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to do someing silly, can be male or female, young or old.
by gaz gaskell August 23, 2003
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This shit is the most sexual thing a woman (besides a mother) could ever say to you, it literally means she wants to suck the fuck outta you’re dick.
Oh John you’re such a silly boy! (Oh John, I wanna suck your dick!)
by VOIDYT May 28, 2018
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