Fire hydrants don't spray their water from the top. Additionally, turning them on is usually illegal.
Rhonda and Brainy are wearing long sleeves when Helga is on the truck.
Sid's pants always change size and he's wearing his black jacket when the truck is being tipped.
There's no credit for Iggy, but he does have a line after Helga gets on the ice cream truck.
When Arnold and Gerald first spot the other kids, Harold has his usual blue shirt on, for the rest of the episode his shirt is white.
When the Jolly Olly Man starts to drive away, Stinky can be seen bald on top, hair only on the back of his head.
When the kids are rioting the license plate for the ice cream truck is "ICETRUX", then when Eugene is lifting the truck the license plate is "ICE TRUCK"
