calm down; let it go
If you see one of your friends about to get into an altercation that you know he/she shouldn't become involved in, you would say, "Man, put some water on that sh*t"
by William Mack March 31, 2004
means flush the toilet
Scenario friend is on the toilet taking a crap and it stinks tell him to"Put some whater on that shit!"
by J.W. January 10, 2005