Is it normal for me to feel weird about the fact that my hubby calls me "mommy" outside bedroom?

Ever since out child started saying "mamma", my hubby too calls me that with our son, just in playful manner and it makes me feel weird because it's a bedroom thing for me... I sometimes call him "daddy" and he calls me "mommy" just to tease one another...

I dont even know how to talk to him about this without making it weird...

Is it normal for me to feel weird about the fact that my hubby calls me "mommy" outside bedroom?
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