Has someone ever mistaken you for being someone’s mother?
First off, here's the definition of the "mum-zone":
Walt Disney Pictures / Via BuzzFeed
For example: You're at a party and someone asks: "Oh hey, are you so and so's mum?"
Fox Searchlight Pictures
Or someone goes up to your friend who's standing next to you and says: "So great you brought your mum along, how lovely."
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OR someone shouts at your friend to come join them at the bar and adds: "Oh, and bring your mum too!"
NBC