Uh oh! Looks like Lisa's Dad is inflating her which makes his brother get onto her, but her mom tried to let go of him when he was grounded from her. Lisa might be neutral to her inflation for some reason.

Aftermath: After Lisa is fully inflated, she gets mad at her dad for this. Her little brother (Charlie) is in his room and could not get out. Let's see what it looks like:

Her father (Phillip) and Mother (Alex) would like to keep her inflated when her brother tries to play with her.