1 definition by Cool Al Yankovic

Top Definition
A sexual act wherein two older or elderly men urinate on one another simultaneously. Name derived partly in reference to "Lemon Party", as well as the mutual nature of the urination being the "pledge".
"This old dude on twitter won't stop talking about Lemon Pledge, I think he might be in the closet"

"I just watched a video where two old bastards signed a Lemon Pledge, gross as hell"
by Cool Al Yankovic July 30, 2012

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