i guess that's one way to communicate, haha.
i especially love jumping on their boats and forcing them to scream, "GET OFF! GET OFF! MY BOAT, MY BOAT!" (russian to english pronunciation:(GI-YET AWF! GI-YET AWF! MAI BAWT, MAI BAWT)) in a mumble of Russian accent which is clear enough to understand, while at the same time they're trying to push you off their boat. they've got some real multitasking skills.