Schrödinger's Horny
When someone says something horny and waits until after people give their reactions to decide whether or not they were serious. If people seem uncomfortable or start laughing, they treat it like it was meant to be a joke the entire time.
"Jason asked Jessica to step on him, but laughed like he had made the funniest joke ever when she told him he was disgusting."
"He was totally being Schrödinger's Horny."
"He was totally being Schrödinger's Horny."