When you have a chest infection, but still keen to give oral sex to your significant other. So you cough up a bit of green phlegm and spit it on them down under for a bit of extra lubrication.
Friend: "Hey, how have you been with this chest cold lately?"
"Yeah, good I gave my partner the Dirty Oyster last night."
Friend: "Oh that's nasty man."
A used condom.
My roommate keeps leaving Detroit Oysters on top of the bathroom trash.
an over-worn pantyliner that smells like the dumpster behind Long John Silvers
I think Jane has an oyster cracker in her dungarees...someone open a window.
Vagina. Probably needs a wash. Can cause cholera, dysentery, or elaborate and grotesque mutations. Having sex with it is not recommended.
Mate... I wouldn't touch a Canvey Oyster with me mates dick.
An advanced form of the scissors sex position between two women that have severely enlarged meat curtains.
Person #1: "did you hear those weird slapping/suction noises last night?"
Person #2:"oh that was just the lesbians next door oyster-shucking"
When you put one or both testicals in her pussy while having intercourse.
I was pearling the oyster while hitting it from the back.