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1.
When you have anal sex with a partner, and then you ejaculate in their poopchute. Then, when they poop, it is what they call a frosted turd.
I gave my girl a nice pounding in the ass, and then a little bit later, she wanted me to check out her frosted turd.
by Steven Jonesss July 02, 2008
 
2.
The sperm-covered feces expelled from the anus immediatley following butt sex.
Sweet dude, I just took a frosted turd.
by Joey Orgler 3 July 28, 2008