u/Slight_Bid2833

This has been bugging me for 20+ years. I was at a conference with an Orthodox (male) coworker. We were speaking with a vendor, who was Jewish, and she mentioned how she recently had a child. I said "mazel tov!" and my coworker promptly said something like "don't say that."

Any idea what the issue was? Was it that I'm a non-Jew?