carbon sandwich

A sex act in which a woman named Esther is simultaneously fucked from the front and back.

Based upon some kinky ester groups in molecules.

Esther: last night was amazing! We made a carbon sandwich!

tweety cum sandwich

When you fuck a girl in the ass so hard she starts seeing little tweety birds circling her head. When she does, you cum inside her, with her ass cheeks acting as the bread.

Yeah man I gave Brittany a tweety cum sandwich last night!