oaty biscuit
An Oaty Biscuit is when you put on a condom, drop a biscuit on it, and then go down on your partner like it's a snack-time special.
I dropped a biscuit on the condom and said it was a snack-time special.
He threw a biscuit on the condom and said it was a pre-fuck snack.
She dropped a biscuit on the condom and said it was a love snack.