Family Guy creator Seth MacFarlane has vowed to stop smoking marijuana because it makes him too paranoid.

MacFarlane signed a $100 million deal with 20th Century Fox in May, in a move which will make him the highest-paid writer-producer in television - and he's determined to increase his productivity by swearing off illegal drugs.

He says, "I don't smoke much pot anymore. One of the last times I was stoned, I was convinced that I would die unless I kept moving my body. So I sat there, baked, waving my arms around like a crazy person."

(This news article provided by World Entertainment News Network)