When the sphinkter contracts and expands especially during an orgasim.
What a female's asshole does during a really good oragasm
What a female's asshole does during a really good oragasm
When I was doing my wife doggy style yesterday, she started to cum and gave me a sphinkter wink.
I gave it to her so good she started sphinkter winkin.
I gave it to her so good she started sphinkter winkin.
by The Zeppelin January 15, 2005