You were breastfeeding your baby, but then bakugo was really jealous and sat your lap with no shirt on. He looked at your shorts and put his under your shorts

Bakugo:Haha, you can't move now!he bites your neck, and you flinch

Todorki: Bakugo, I think you should stop.

Bakugo: SHUT up before I use my quirk on you!

Deku: kacchan

Bakugo: YOU CANT CALL ME KACCHAN ONLY OUR WIFE CAN AND SHE IS NOT YOUR GUYS WIFE SHES MINE!