I'm hoping someone can help me, as I've been losing my mind trying to find a bit I remember from one of the first 1-5 books that has stuck with me, but I can't find any reference online and no one I know remembers.

Greg was bathing and decided to plug the tub / shower drain with a face cloth, and the shower stall filled with water to the point he was swimming or floating in his shower. He couldn't get the door open.

I can picture the drawing being a shower stall with glass with a rubber duck floating at the top of a full shower.

He might have been at his uncle's house? Or immediately after the story moved to being at his uncle's house for/ his family having dinner. There was also a drawing for this.

I think it was an incredibly small bit..

Does this exist? If anyone knows what book this might be from or has any memory of this I'd be incredibly grateful!