Top Definition
A superlative that is meant to express the highest form of something, to be so excessively "verb" that your penis is actually, or has the potential of, metaphorically falling off. Not meant to actually mean that your penis is detached from one's body. Can be used by both male and female parties.
Thought to be another form of "my ass off" as in "laughing my ass off."
Example 1:
John: "Ey, I haven't slept for three days, I'm sleepy"
Robert: "I haven't slept for five days, I'm really sleepy!"
Patrick: "I haven't slept for a month, I'm sleepy my dick off!"

Example 2:
Michael: "Dude, could you pick me up a free water?"
David: "Why don't you pick one up yourself at the concession stand?"
Michael: "Because I'm thirsty my dick off, but I'm also 'not wanting to pay 5 dollars for a water' my dick off"

Example 3:
Paul: "Damn, check out that girl over there, she's so fine"
Richard: "Hell yeah, she's sexy my dick off"
by TheSnowman1 October 12, 2010

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