A guy is diving in the middle of the ocean. Suddenly he sees another diver, but without any equipment.
He wonders how he does that since he’s already dived quite deep. A minute later he sees he’s gone even deeper underwater.
He thinks, “Wow, that’s impressive”. He swims closer to the guy and writes him a message on his underwater writing board:
“How do you manage to dive without equipment for so long?”
The other diver writes back:
“I’m drowning you сrетin. Help me!”