Sports A Poppin' is the first part of the 21st episode in season 2 of Dexter's Laboratory, which first aired on December 3, 1997. In this episode, Dad tries to get Dexter to play sports.
Dexter's dad is inspired to teach Dexter how to play sports, despite many attempts he can't even teach Dexter to throw. He gives up and walks back to his chair, when Dee Dee shouts that she's let loose the giant monster, leading Dexter to spring into action, able to throw and jump easily.
Dad is seen leaving to go back in the house from the backyard. Dexter is seen picking up stuff from the front yard when he's suppose to be in the backyard where they were originally.
A few frames before Dexter battles a giant monster, the driveway is missing.
The giant monster bursts out through the front of the house, yet the front window from Dad's point of view seems undamaged.