1. (n) When expelling a deuce leaves no residual evidence; requires minimal cleanup. Usually causes the person to visually verify the bowl for proof of any actual "work being done".
2. (v) Upon completion of a clean drop, the person is sure to exclaim his accomplishment to anyone nearby by yelling this phrase.
See clean cut.
1. Dude, it was a clean drop.
2. Gene exited the bathroom excitedly yelling, "Clean Drop!"