oati
An Oaty Biscuit is when you wear a condom and drop a biscuit on it during sexy time. It's wild and a little gross.
My boyfriend did an Oaty Biscuit and I laughed so hard I cried.
I tried an Oaty Biscuit and now I think I'm gonna get a stomach ache.
My sister did an Oaty Biscuit and I told her she was a weirdo.