Also known as a "brown cat-stamp,"
this phrase refers to when
a friend (or enemy) presses a cat's
butt-hole on another person's clothes or skin.
Alan was
disgusted when Mr. Niersen
scooped up his kitten, and pressed her
exposed kitten-anus against Alan's skin, leaving a cat-butt smell behind. Mr. Niersen had given Alan a brown kitten-stamp.