Her husband Charlie is walking around the exhibits at the carnival and spots a strange item through a slightly parted tent flap. He enters and finds a jar with, well, something in it. Is it a head? A deformed baby? It looks a little like the bottled alien that lunged at Paul Reiser in Aliens.
A carnie joins him and says he’d be willing to part with this thing for $40. Charlie takes it and shows it off to the local yokels, then home to his wife. He watches as she rides off with Carmody.
Yada yada . . . .
Really, this covers this episode better than anything I could write: