One nut won't drain me.  Two nuts probably won't either.  I think it would take some expert physical and mental manipulation to drain me completely.  Are there Dommes who specialize in draining the submale and getting every last drop?  I would love the experience of thinking that I am completely done and have nothing left to give, only to have an expert Domme find a way to squeeze a few more drops out of me...

...there are plenty out there willing to do this. But, where are you looking?