helmet diving
The act of inserting one's penile helmet or the helmet of one's penis into the vaginal canal of a woman
Bobby and Gina decided it was a great time to go helmet diving.
Diving helmet
The ancestor to both the gas mask and modern scuba diving gear.
I've never tried a diving helmet. But yes I've tried a gas mask.
German Diving Helmet
The German Diving Helmet is a sexual position in which one person inserts his/her head into a female’s vagina.
Gerald: Why does your head smell like fish?
Phil: Tonya let me do a German Diving Helmet last night. What a freak!
Phil: Tonya let me do a German Diving Helmet last night. What a freak!
Diving helmet
The ancestor of modern scuba diving equipment.
The diving helmet would have looked like a combination of a gas mask and a scuba diving mask.