Top Definition
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.
#concealing #stuff up #hide the penis #uncomfortable #sucks
av Dertty 30 december 2005
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.
#shaft #prank #fuck over #put one over #punk
av richard jacobs 5 februari 2007
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