The phrase "mom thing" refers to something that is commonly associated with or done by mothers. It can describe a behavior, action, or responsibility that is typically attributed to moms.
Sentences with «mom thing»
I'm more than imperfect, actually, and I'm sure some could even argue that, from time to time, I totally suck at this whole mom thing. (romper.com)
I know what you mean about the stay at home mom thing. (atreatsaffair.com)
For a few months, I thought I could make the full - time, working mom thing work. (mkemom.com)