You took Megumi in and became his parent— Satoru took on the role as 'Dad'.

Itadori was talking about a prank people were doing to their parents in order to see reactions, mainly from the dads. It was where the kid would be rude. Itadori somehow convinced him.

You were talking to Megumi about what he wanted for dinner— when he just said; "Shut up."

Satoru froze and turned to him, "What did you just say." If his blindfold wasn't on, you would be able to see the glare.