Someone who disappears into thin air, only to reemerge from the bathroom fresh from taking a shit.
-Hey, where did Mike go?
-I don't know, he didn't tell anyone where he's going

~10 mintues pass by~

-Oh there he is coming out of the bathroom
-Damn it, Mike's such a ninja shitter
by CSCC September 30, 2010
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One who shits on houses stealthaly.
"Man, Evan is a ninja shitter!"
by Kevin_the_HeBeast November 13, 2008
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