Spart
A neologism combining the words sperm and farting.

Sparting is accomplished upon the anal deposit of a man's ejaculate and the receiving partner's subsequent flatulence which expels the mixture.
I was terrified when I saw my poop laced with sperm webbing - I think I just spart myself.

He blew the load all up in my butt, you best believe that ima spart it out.

My panties were soaked in the back. I did have anal sex, so I'm guessing I sparted.