Jeff Dunham is a ventriloquist.
There's really nothing much special to his job, and he spends a great deal of time making people laugh. Nothing out of the ordinary, really.

At least, until his show puppets all simultaneously come to life, as much to their surprise as his own.
Somehow, this involves Achmed accidentally blasting them all to Equestria.
Don't ask me, I don't know, either.