Phineas and Ferb

'Phineas and Ferb' is an animated television series that premiered on the Disney Channel in 2007 and ran until 2015, concluding with four seasons and 222 episodes. The cartoon's title characters, stepbrothers Phineas and Ferb, spends the series trying to pass the time during their summer vacation, while Phineas' sister Candice constantly tries to expose their larger-than-life activities that could get them into trouble with their parents. During this, their pet platypus Perry is a secret agent foiling the schemes of mad scientist Dr Doofenschmirtz.

S1E24: Out to Launch
Candice wears a spacesuit, but the air distributed by Phineas inflates candices butt, leading Candice to push against it to try and even it out, which instead inflates her hands.