I know how to swim but I don't do it anymore.
Last time I swam was a beach when I was 11-12. I was doing fine but then a wave hit me and knocked me under, I couldn't see anything and tried to find my way up. Started to panic, but luckily someone found me in time.
I've avoided swimming ever since, but I'm sure I could if the need arose.
"I dreamt I was a moron."