I think you need to learn that divers take the piss out of each other (how come the OW course never mentions this), but it's usual not meant with any viciousness! (unless you are one of them there Gooey lot of course but they deserve all they get )
And the fine lad probably has no idea what it means to take the piss out of someone. You silly Brits are always trying to confuse our American youth!!!