The sexual act of a man or woman putting thier entire head into a vagina.
Last night I gave your mom a salmon helmet.
When someone with a rotten twat sits on your face.
You think that's bad, remember when the prophet Muhammed gave me a salmon helmet while I was wearing a toga.
When a chick with a stanky vagina sits on your face.
"You think that's bad, remember that time the prophet Mohammed gave me a salmon helmet while I was wearing a toga!"
Spawned by the recent South Park episode where Mohammed gave the Family Guy character a "salmon helmet".
A salmon helmet is when a particularly filthy smelling chick sits on your face for you to eat her out.
I brought that nasty chick home from the bar, and she gave me a salmon helmet when we 69'd. I almost booted up her asshole.
The dried crustations of stinky snatch on your helmet while attempting a 'morning after' re-entry.
Last night was hot, but this morning the salmon helmet on my johnson couldn't get the boys to victory.