putting the corn back on the cob
While having anal sex with a woman, you pull out to discover there is a piece of undigested corn on your dick.
I was at a party on the week-end and this cougar totally wanted my dick in her ass. About half way through I pulled out to change positions and realized we were totally putting the corn back on the cob. In the interest of fairness I asked her eat the leftovers. That was awesome!