Bulbocavernous reflex survey

This thing has been always on my mind since the first day I started using my schlong for something else than just peeing.

Does your bulbocavernous muscle contracts involuntarily when the head of your penis is stimulated by penetration/fleshlight/felatio (in my case even the slightest touch activates it) or sometimes occasionally when you masturbate by rubbing just the shaft of the penis?

The thing is that whenever it contracts in my case it decreases the sensation I get from nice moist felatio or penetration. For some reason I’m thinking I have it a bit overeactive because a slight touch on the head sends my penis swinging up and down in BC spasms/contractions.