A "sexual aid" used at the base of the penis, usually made of leather, which serves
the dual function of both constricting blood flow for
hardness as with the use of a "
cock ring" and also as a "penis bib" of sorts, protecting the cock and balls from unwanted fluids as when engaging in anal sex or copulation with a menstruating female.
Ahh Dude! I got to the party so late, like 6
other guy's had already
boffed Jenny, so I had to use my "
leather donut". I think the chick may have been on the rag anyway.
