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The act of trying to hide an erection by tucking your penis into the waistband of your pants. This method is usually used when in public and/or wearing loose fitting pants or shorts.
I got an erection while staring at that woman but i was in public so I had to tuck up.
by Dertty December 30, 2005
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Aug 4 Word of the Day
Man's greatest invention, brain bleach removes bad memories and general DO NOT WANT moments. Every household should have a few gallons.
1: Dude, I just walked in on my parents.
2: Have some Brain Bleach!
by Andikun November 06, 2007
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To shaft or prank someone, usually a mate. As seen on some of the WKD adverts
You tuck up a mate, when they can't get away from someone talking to them and you don't rescue them.
by richard jacobs February 05, 2007
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To say something so incredulously stupid, backward, socially regressive and void of morality that you sound like Tucker Carlson.

*Not to be confused with Tucker Up (When an African-American man chooses to hang about exclusively with a man from the Orient)*
1. To tuck up so badly, that even your mother doesn't want to talk to you anymore.
via giphy
by IceFergLettuce March 25, 2019
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