Top definition
A "Sphincter Soak" -(noun or adjective) is someone's significant other, fuck buddy, mistress or mister.

In more adventurous circles a "Sphincter Soak" may refer to less sentient beings i.e members of the animal kingdom and/or vegetables.

- Verb
To Sphincter Soak
- Where's Lex?"

- I don't know she had been spending a lot of time with her Sphincter Soak.

-Is this dinner or Ivan's Sphincter Soak?
by The Haus of Henry November 07, 2015
Get the mug
Get a Sphincter Soak mug for your father-in-law Trump.