I can’t imagine anything more pleasurable for a slave to enjoy – the chance to suck their own penis. Of course there always has to be a down side and in this case it was a simple choice between air or penis? Penis or air?
Lucky lucky sub didn’t need to make that choice at all as I just kept ramming the gas mask tube over his cock everytime I thought it would look good.
Only was small issue – as the air was removed the sub sucks harder trying to get air into his lungs and as a direct result the penis grows and swells and fills the whole tube … whoops … must watch out for that as it could be quite a severe kind of breath play