What does it mean?
Do you know?
Take a guess, then scroll down to see the answer
Here's the answer, according to the Urban Dictionary:
The one-up rivalry that moms play making their child seem better, smarter, and/ or more advanced than yours. May involve two or more moms and any number of children, even full-grown.
She engaged me in mompetition insisting her son walked at 6 months and implying my son was slow for his age.
7 hours ago