Roman helmet

[Rihanna]

While they are passed out, gently and inconspicuously place your fleshy bag on their forehead while carefully laying down your dudemeat down the bridge of their nose in parallel fashion

[Rihanna]

The art of placing your hairy sweaty nutsack on a rivals forhead. Then going in for the kill slapping down of the penis on the nose assuring victory. Also known as the ender to all wars. Technique: Usually alcohol related 1. find the victim 2. ready the forces 3. engage the nutsack with the forehead 4. Drape shaft on nose 5. claim victory

[Becky]

When a man lays his genitalia on a girls face while she is passed out and usually he tries to reach his genitalia down to her nose.

[Rihanna]

Although the definition of the balls on the forehead and penis down the bridge of the nose is accurate, what is not accurate is the genesis of the term. Astute observes might notice that ancient roman war helmets did not in fact have a nose piece.
The reason that it is called a Roman Helmet is that during Caesars conquest of Gaul, he had their leader Vercingetorix surrounded in Alesia when the Gallic reinforcements arrived and surrounded the Romans. Outnumbered and demoralized, Caesar rallied his troops by offering a soldier who had lost his helmet his balls and penis as a replacement. So moved were the troops at Caesars offer of self-sacrifice that they went on a rampage and defeated the Gauls. The rest is history.

[Justin Bieber]

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.

[Little_Girl]

the hair sticking out of a very hairy ass crack that resembles the mohawk on a old fashioned battle helmet.

[Mark Zuckerberg]

The act of defecating on someones head from front to back, so as to imitate a Roman officers helmet.

[Jessica]

After a long day of beating off many times, the tip of the penis becomes red from too much friction resemblimg the red tip of a roman helmet.