When one ejaculates into a steamy pile of fecal matter after having sexual intercourse with a female during menstruation. The brown shit, red period blood, and white semen represent the three delicious flavors of Neapolitan ice cream.

A Neapolitan Salad is most common when a male stops having sex with his partner, while she is on her period, and then gives her a log jammer (please see definition).
Jim: Hey Sal, what’s that on your face?
Sal’s fuckbuddy: Oh, that just some leftover Neapolitan Salad.
by Mike127 May 3, 2007
Get the Neapolitan Salad mug.