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1. Something said to discourage unnecessary boasting about masculinity/macho-ness

2. Instructing one to shut-up/calm the fuck down
Girl: Hey, what's up?
Boy: Just blasted 100 reps of 50kg chest presses. Warm-up done!
Girl: Tuck your dick, fool.

Girl: OMG INSTAGRAM GOT A NEW UPDATE AND NOW I DON'T KNOW WHAT FILTERS TO USE TO MAKE MY SELFIES LOOK HOT??!!?!
Boy: Bitch, tuck your dick.
by Abzatron June 16, 2014
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2
This phrase is used when someone is being overly arrogant or cocky and you want them to stop.
Bill: I was at the gym pumping some iron, and this noob came over, and I could bench-press about 50kg more that him. What a loser, I am the man.

Richard: Tuck your dick Bill. you twat.
by RichardTucker June 16, 2014
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