Ask this idiot how he would feel if we were to put a rubber band around one of his fingers (or another important body part ), and cut off the circulation until it fell off.

He sounds like a very irresponsible pet owner, I hope you can get through to him.

Yes, rotties traditionally have nubs, but if the tails aren't docked when they are very young, there's no reason to do it. Why did he get this dog if all he wanted to do was hurt it?? I'm sure he could have found plenty of rotties with their tails already docked--he is a sick individual.