Pornaoke 

when you sing karoke while a porn movie is playing in the background.

OMG I WENT TO PORNAOKE LAST NIGHT AND I GOT SOME FREE CONDOMS!!!!

Pornaoke by DIRTYGIRL210 August 17, 2010

Pornaoke 

When you watch porn with the volume muted in order to add your own dialogue and sound effects.

Me and this cute girl played Pornaoke last night. I think I'm in love.

Pornaoke by NOSKCAJ September 18, 2012

pornioke 

Latest craze in karaoke:
Singing karaoke against a video background of hard core pornography.

The bitches and I are gonna have a pornioke party later!

pornioke by Connie Lingus September 10, 2003