Those images are intended for fantasy, but I've got it setup for reality. Now I've elevated to wearing a trouser sock over my head. Just had a real nice session in the shower. The hot water running down my nasal cavity actually provided some nice temporary relief for my cold. Had a so-so orgasm as I couldn't let my body convulse as I normally do when I orgasm while laying in bed, but it was good.
Yeah I've seen some videos on sites like heavy-r.com where people suffocate and pass out. I would never do that. But thanks for the pic.
I once wore a full zentai suit while in the shower and it gave me the sense of drowning. Never again will I do that, and if that's what waterboarding is like, I surrender.
Worst sensation I ever experienced was that full hood getting clogged with water and suffocating me. Trying to find that back zipper with my gloved hands while unable to breathe, was too scary.