Definitions by Cous Cous
Poop Tip
Specifically, it's a tip left on the closed lid of your hotel room toilet that you have thoroughly clogged and left for the maid to clean up. In a broader usage, it's appropriate to use the term to describe any tip given to someone dealing with the dirty, smelly aftermath of your poop.
"I took such a big shit in my hotel room this morning I clogged the toilet and had to leave a poop tip for the maid." (Specific usage)
"The room service guy showed up right after I took a monster shit. The room smelled so bad I gave him a little bit extra as a poop tip just for walking in." (Broader usage)
"The room service guy showed up right after I took a monster shit. The room smelled so bad I gave him a little bit extra as a poop tip just for walking in." (Broader usage)
Rat Gaurd
A piece of wax paper or sponge firmly secured to the underside of the scrotum during double penetration in order to avoid rubbing rat belly with the other guy in the double team.