This can also happen if you're being held down against your own will. (has
embarrassing story to share about this). Once while in a pool with a
member of the opposite sex, I was sitting on the rope that separated the
shallow end from the
deep end, and he began to
tickle my feet and my stomach. This tickling led on to
massive giggling, causing me to fall back into the
deep end. Because the rope was anchored down by the weight of my body, I couldn't sit up, and he couldn't tell that I was
drowning. I could barely pull my head up, and when I did, water would splash in my eyes. The result of all this pushing around brought on the embarrassing trial when I finally managed to get up. My legs had
wrapped themselves around his head. Although I swear I didn't move them around him. I distinctly remember seeing him pick one up and place it around the other side of his head as some sort of
seductive notion. There's nothing
seductive about
drowning.
I'm not sure if anyone will be able to relate to this, but I gave it a shot.