(n) Shi'thead- the Arabic equivalent of the standard english insult "shithead". Can be used candidly without most people grasping that you are actually establishing what an idiot they are.
Also a fantastic name for your dog.
Mok: Hey man, do you like this pink Izod shirt I just paid $85 for?
Daddy Pants: Yeah, it makes you look like an even bigger shi'thead than you already are. Good job!