About ten years ago I gave my manager blow jobs to avoid being laid off, not sure why but I seem to not have a gag reflex and had no idea until I was sucking on him. While in my yearly health check up I asked the doctor if there was a way to see if I had a gag reflex or not telling him I nearly choked on some food and it did not seem like I was naturally trying to get it out. He told me yes and told me to open wide as he was getting a tongue depressor, he slowly put it in my mouth and sure as hell seconds later I was gagging and coughing, told me looks like I have one to him. I am not sure why but I have never choked or gagged on food and seem to have no issue swallowing a cock to the base over and over.