Fossil Fucking
Being so bored and horny at a museum you run to the dinosaur exhibit and jump onto the nearest fossil and hump til ejaculation or kicked out.
Security Guard 1: "We got a code white!"
Security Guard 2: "What's that?"
Security Guard 1: "Ass-holes fossil fucking a stegalosaurus!"
Security Guard 2: "What's that?"
Security Guard 1: "Ass-holes fossil fucking a stegalosaurus!"