Often used by female mates as a name for the male's penis.
*Girlfriends discussing the potential name of the one's boyfriend's member* "Do you fancy 'Princess Sophia'?" "Eh… I'd say I'm more fond of 'Willy Nilly'."
by Hear_Bush_oink April 10, 2004
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Julie told Nickie that her boyfriend Danny was "willy nilly". and couldnt get hard.
by da Wordman October 30, 2003
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Willy nilly = perforce = involuntarily inevitable = of necessity

After making that public statement, Boris was driven willy-nilly to support of the candidate.
by 86podpeople October 21, 2003
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1. -surely and without regard to plans or inclination
2. -by compulsion: without a choice
3. -in haphazard or spontaneous manner
It seems that we must drift willy-nilly toward disaster.
by xjap April 9, 2007
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a euphemism for sending dick picks to random strangers.

also known as willy nilly willy picky
person a: dude, why is your wife so mad at you?

person b: willy nilly

person a: for fucks sakes dude
by Dumpsta baby August 27, 2019
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