Stargate SG1 - Seth

This week, the team meets the enigmatic Seth. And, according to my mother, Snuffleupagus is easier to say than Seth. How exactly do the goa’uld choose which god they wanted to impersonate? Just what is the lifespan/aging process for a symbiote? The Jaffa are apparently huge jokesters. If you answered the phone and the person on the other end said they were the President, would you believe them? Where did Seth get all those wonderful toys? PLUS JOKES! Lots of jokes! Hail Dorothy.