This short was featured in Who Framed Roger Rabbit.
When Goofy, whose arms and legs are trapped in the barbells, is rolling on the barbells like wheel, he is shown to have his t-shirt tucked into his shorts. This is a common rule for participants of any gym to follow since this encourages people to prevent their shirts from flying up in the events they tumble. Ironically, Goofy caveman-like suit continuously flies up.