A tank or "the tank" used to produce the world we have today. It was the tank that adam shoved in eve (his penis). The tank that rose from the dead (jesus). The tank that won the revolution (america). And the tank that carries everyone on there back today (china). If you have ever seen anything unstoppable, important, and truly amazing, call it a J-tank.
Girl: Dude look at that big ass stud, he is so ripped. I would so ride his cock for hours.
Other girl: no you couldn't. You wouldn't be able to take it cause he's a J-tank. Its probably to big!