A sexual move/position. The woman is duct taped to the ceiling in a sitting position while the man positions his erect penis under her. When the duct tape fails to keep the woman suspended she falls onto the mans penis. If done incorrectly (e.g. without a metric fuck ton of lube) penis fracturing is a high possibility.
Did you hear? Ol' Shaz gave Jonesy the thundercunt last night! Poor bloke broke his cock!