Not knowing how to swim

[Serana]

I have a hard time grasping how you can drown in calm water. I can stay a float without having to move my arms or legs. My cat has never swam before, but if I threw her in a lake she'd be able to swim to shore.

My brother can barely swim. I'm no Michael Phelps, but I know how to swim. You don't want to be a real life GTA character do you? Learn how to swim people.

At least, CJ broke all stereotypes and became the first character to not only swim, but be able to dive several metres under water.