Parent's days are usually a nightmare for students but I guess they can be nightmares for parents of troublesome children too.
It'd be crazy if Lum's mom was also Ataru's girlfriend. Seeing her interaction with Mendo, I don't think she'd mind being with a younger Japanese boy...
It's wild that Lum's mom speaks in mahjong tiles lol.
Bit sad Viz didn't even attempt to translate the proposal pun. Wonder what else we're missing due to the language barrier.