It's definitely possible big guy...your prostate gland is back there and that controls the orgasm reflex.

I've never personally expierenced it but it doesn't take much stimulation at all to get me over the edge when I'm recieving. My favorite TS always comes with out exception from anal stimulation alone so your not the only one.

Lucky you!  I think I was close once while just playing with a toy, but it took a lot of work. I hope to find a strap-on lady to help me, or maybe one of these gorgeous TS-gals that really are into being a top.

Nope, not just you.

I saw a t-girl once who could hit the ol' prostate just right.  Came like a freight train after only a few minutes.

Agree with the others. Possible, but it will be different for everyone. When I was subbing for a good strap-on domina, she could nail the prostate pefectly, and I'd get a powerful orgasmic feeling. A couple times it extended from my stomach to half way down my thighs. But I never do the final blow unless there is some amount of direct manipulation to the old peter. And, no, you do not have to be erect to unload.