the person who criticizes a lot
(at a lesson a person criticizes all the time)
me: He's such an underfucker!
by beduina November 6, 2013
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1. Yo look how hard she's hitting on him... she's definitely underfucked!

2. That guy is completely underfucked. He just desperately asked her out again after she told him to fuck off for the third time...
by Stephen and friends June 23, 2010
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The act of making love to someone in an unsatisfactory way.
She complains I was just another underfuck.
by Frank1957 October 18, 2007
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The person who does not have enough sex and is acting frustrated all the time
John: Why Becky is so annoying? what is wrong with her?

Mary: Oh, she is just underfucked.
by equillibra August 4, 2017
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Yeah man, my summer is a total underfuck.

Our fuck was a total underfuck.
by Ownthink June 30, 2005
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The person who's only goal in life is to make a public speech impossible to perform. Also known as heklers
- Every time I try to present something she is always there to sabotage it.
- Gosh, she's such an underfucker!
by NotLongEnough November 12, 2020
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When a person comes up with ANY excuse possible in order to just NOT tell the truth out of sheer stubbornness.
She totally underfucked herself so hard when she refused to just let them know that she had mononucleosis instead of covid, what a stubborn bitch.
by JTZebra December 12, 2020
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