One who sniffs the biycle seats of his peers.
Bob was a caught Milly-Whiffing his friends bike.
by Anonymous July 12, 2003
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"I thought Jennie had a boyfriend, but she was a biff whiffer all along."
by David75020 April 24, 2008
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a guy that goes around sniffing girl's bicycle seats in rainy weather
"I saw that guy in the parking lot. He's a whiffer sniffer allright!"
by joe mcduffie June 11, 2007
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Someone so desperate for female attention that they resort to smelling women/girls bicycle seats. The term originated in the Youngstown ,Ohio suburb of Poland Ohio in the early 1960's.
Poor Bob could never get a date with her,he's just a millie-whiffer.
by J.E.Op October 12, 2010
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either
{N}: Someone with massive smeg problems which you can smell from 3-4 metres away.

or

{Adj}:A Gay/bent man who goes around eating smeg, usually spooning aswell.
Person 1 "Hey duuuude, whats that smell, man?!"
Willy Whiffer "Ummm... probs cottage cheese, in, like the refrigorator or some shit like that"

Gossiper 1 " Hey, norman is acting a bit funny today"
Gossiper 2 "Yeah man, do you think he is a Willy Whiffer?"
Gossiper 3 "For show!"
by Peregrinius V January 23, 2011
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Someone who enjoys smelling other people's aromas.
"Yeah, my man's tony? He's a big whiffer, always trying to smell other people's stuff."
by bigjumbo23 December 23, 2020
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