How will you explain to your mother in law that you're not a believer of the saying "babies should not take a bath on Tuesdays and Fridays"? I told her politely that babies needs to take a bath everyday,but she insist that its bad luck. She even got mad at me.

I simply don't have to explain. I have been taking a bath everyday since I was a child and nothing bad happened to me. No need to argue with her, it's her own belief.

I tell her my baby my rules. She can tell my husband instead not to bath on Tuesdays and Fridays he is her kid anyways. lol

You don't have to explain anything. S/he's your baby. You can bathe him/her whenever you need to.

Tell ur mother in law that mothers knows best wat s good for her or his child..😂