Ruby: The entity in this house was born specifically out of Francine's sexual frustration. I like to call it a poltergasm. Gestures with his finger
Steve: What are you doing?
Ruby: I just drew a trademark sign with my finger, child, because I've registered the word "poltergasm." Any movie scripts you write based on your experiences here, Ruby gets a slice.

Buffy and Riley, under the influence of the poltergeist, were stuck having sex repeatedely without realization of what was happening outside the room like one big poltergasm.

He's so talented at oral sex he gives me poltergasms.