Eggshelling

Verb,
the act of walking on eggshells;
to act in a timid manner around someone, for fear of saying the wrong thing and upsetting them

“You said sorry a lot yesterday. Why are you eggshelling?”

“She’s always eggshelling around her boss, but has really great inputs when he’s not around.”

Eggshelled-idiot

A person who tries to use the shell of an egg as a hat.

Child: "Mom look at my new hat!"
Mother: *cocks shotgun*
Mother: "No son of mine is an eggshelled-idiot."