The act of two people, traditionally a man and woman, urinating in unison into a common toilet. For a proper sharp shooter the woman, or one person, must be urinating while sitting on the toilet while the man, or other person, is standing facing her or him urinating between his or her legs into said toilet.
That was a clean sharp shooter, I barely got any pee on your legs!
During vaginal, oral, or anal sex...a male who is capable of fully removing his member from the respective orifice and sliding it back in seamlessly or otherwise unimpeded or, in the case of vaginal intercourse, without committing a misfire.
He was face-fucking his girlfriend and was able to pull it all the way out and get it all the way back in without hitting her teeth or gouging her eye. Guy's a fucking sharpshooter!