Jimmy was so excited to be carving Jack-o-Lanterns and he remarks about how much he loves Halloween. He asks Natalie what she plans to go as for the Ball while he's digging into a nice, fat, low one. Jimmy tries his hand at being artistic and makes a couple of Jack o Lanterns. One is a Golden Snitch and the other is a Vampire. But he's not exactly the most artistic so the lines are a little choppy and they more or less look like run of the mill pumpkins.
He volunteers to help light the pumpkins but he gets distracted on one of them. The pumpkin explodes, showering a few people (your choice) in pumpkin guts. He's covered, tense and squinted his eyes shut. He's mortified! So mortified that he can't speak for a few minutes.
Later he goes and apologizes to the pumpkin carver's pumpkin that he accidentally blew up. He helps clean up the mess and offers to hollow out a new one to the "victim" so they can make a new one, but not have to deal with the gross, internal guts of the pumpkin.
Later he helps with some of the last bits of decoration and reaffirms he's willing to help out.