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2.
The act of placing one's penis into another's ear, usually accompanied by the exclamation, "Pee willy!".
"I totally pulled a pee willy on Ben while he slept last night. He woke up with my junk in his ear!"

Cousin of the wet willy
Not to be confused with the poo willy
by nWhistle August 31, 2013
 
1.
The act of peeing on your finger and going up to a buddy and sticking it in their ear and yelling PEE WILLY!! cousin of the poo willy and wet willy
Nelldog and Garringer were acting like major sluts so Carlos gave those sons a guns a pee willy
by A genious January 12, 2009