An analogy for life!
Indeed. I have sound files on my phone of Edna saying and screaming "No Capes!" They are used - or I'll call an audible - when warranted in any appropriate situation in the DoodleBob family. For example, if a little DoodleBob wanted a flashy hockey stick that costs more than his already-awesome stick, they get the loud "NO CAPES!!"
Edna and Jack-Jack may be my favorites from that movie.