Top Definition
When you finger a girl while shes on her period (and has a tampon inserted)until she cums and then punch her as hard as you can in the vagina so the tampon comes out of their ass covered in blood, cum, and shit making a Neopolitan Swirl...
I was chilln wit da homegirl and outta nowhere that freaky hoe told me to give her a Neopolitan Swirl...

One day me and my friend (CAR)were bored and I said shut up or i'll give you a Neopolitan Swirl and she was like whats that and than I told her what it was and she laughed
by ...Mikey... March 02, 2009

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