Helmet to Helmet
Two naked men embracing, causing their penis tips to make direct contact.
After shedding their swimsuits, Tom and Justin hugged Helmet to Helmet.
Incidental Helmet-to-Helmet
An NFL rule that states helmet-to-helmet hits are allowed in Carson Wentz. This only applies to Carson Wentz and nobody else.
Jadeveon Clowny's incidental helmet-to-helmet hit won the Seahawks the game.
helmet helmet
what a helmet wears for protection
If I was a helmet, I'd wear a helmet helmet, too.