When your girl is napping, and you place your balls on her forhead, with your cock running down her nose, like a roman helmet, because you can.
"Right after our extreme frisbee tournament, I came home and my girl was asleep on the couch. I wanted some ass, so I woke her with A well marinated, full flavored, Roman Helmet. I'm not sure if she was into it."
An asexual display of male dominance, often involving alcohol and individuals compromised by overconsumption, requiring the symmetric positioning of one’s scrotum (left testicle-left eye socket/right testicle-right eye socket) and penis along the bridge of another’s nose. The orientation must be sufficient to give the appearance of The Late Roman ridge helmet (a combat helmet of Late Antiquity worn by soldiers of the Late Roman army).