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1.
When a man gets around, and in an effort to hide his erect penis, tucks it under his belt/waistband in order to avoid embarassment. "Russian" is replacing "rushing", because it would be quickly used to hide your erect member.
Dan got a boner in class, so before he got up, he quickly did a Russian Tuck, so no one would see his gargantuant boner.
by Penis Humor November 24, 2010