On cartoons whenever someone finally stopped struggling and went underwater and drowned, bubbles appeared at the surface where they dissapeared.
Whenever I breathed out underwater while swimming I got uncomfortable and scared becuase I thought the lifeguard was gonna think I drowned and try to come save me, then yell at me for creating a false alarm.
A childhood belief about swimming pools

others believed things like this
- When I was little I though "A Cross" was a mud/tar pit and that Jesus drowned.— Usagi Ohkami
- i used to believe that pools had underwater doors that sharks were going to swim out of.— marky
- I used to believe eating fish enables me to live underwater and eating veggy makes me prettier!— Melody
- i used to be scared to use the bathroom becuase i believed something lived in the toilet.— robert allen freeman the fourth
- After watching Return of the Jedi, I belived that whenever you died you just dissapeared.— Nano
- I thought everyone only had a set number of breaths before they died.
I breathed slowly for a long time.Anon