When referring to a man's erection as a boner, a boner shrinker would be anything that diminishes it. Most likely an unattractive woman. Made famous by the 9/13/2008 opening skit of Saturday Night Live dialog by Tiny Fey and Amy Poehler:
FEY AS PALIN: "So we ask reporters and commentators, stop using words that diminish us, like 'pretty,' 'attractive,' 'beautiful.'"

POEHLER AS CLINTON: "'Harpy,' 'shrew' and 'boner shrinker.'"
by ChiGal September 21, 2008
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A psychologist (derogatory).

See also: shrink.
"I've been going to a head shrinker to deal with my anxiety problems and to make the voices in my head shut up."
by xido November 8, 2004
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Someone so unattractive that it totally turns you off, AKA makes you lose your boner.
On SNL, "Hilary Clinton" called herself a boner shrinker.

I was getting so horny checking out a hot underwear model the other day- then a guy so ugly walked in that I was completely incapable of staying aroused. What a boner shrinker.
by Kr1574 October 17, 2008
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She's so ugly, she's a boner shrinker!
by Cori Stahl September 17, 2008
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A day that is so cold that it causes shrinkage, as in the Seinfeld episode.
Jay: Man, it's so cold out here my ears are frosting!
Chuck: Yeah, it's a real weenie-shrinker.
by Chuck_2122 January 18, 2007
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(noun). Comment, concept or event that is a sexual turn off (especially to men). Libido suppressor.
Hillary Clinton is a real boner shrinker - If I need to take a cold shower, but don't have access to water, I just imagine her face or voice.
by oslodude September 23, 2008
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A pejorative term for "small child". Reference to a segment on the 70s television show, Krofft Supershow where a mad scientist shrinks a trio of friends.

Useful for referring to a loud and/or annoying child, or to express one's general distaste for children in general.

Alternate: Shrinker

Quinn: My next door neighbor's Doctor Shrinker was screeching all night last night.

P. Thomas: Man, I'm so glad there are no Shrinkers in my building.
by spamania August 25, 2007
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