Top Definition
a small penis that becomes unexpectedly large when aroused
girl 1: damn he had such a houdini weenie!

girl 2: ya i heard it grows better than it shows
by quarrion October 31, 2011
1 more definition
11 Words related to houdini weenie
When having sex with a girl doggy style, spit on her back, when she turns around thinking your done,cum on her face.
I was like a magican and pulled a Houdini weenie as a trick.
by The Amazing Pudges November 18, 2003

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