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1 definition by Bobby Knocks

 
1.
When you have an erection and you try and hide it by folding it back under your underwear band. A valuble technique for random adolescent (or in some cases adult) erections.
No one can tell, but I have the biggest lumer right now.

I had to give the speech in front of the class so I used the ole lumer trick.
by Bobby Knocks March 21, 2013