I can cum just by tensing my asshole

So the other day I made a discovery so miraculous Christopher Columbus would’ve tried to colonise it.
I was getting down to some me time, as we all do, however I found that after loading my video of choice and doing one stroke that I already felt right on the edge, because I didn’t want to finish so early into my session I let go to let the sensation settle down, to my dismay I found that I was still feeling really close nearly a minute or two later.
At this point I’m really confused, because I have stroked myself once and let myself rest for two minutes and it still feels like I’ve been jerking it the whole time.
This is when curiosity strikes, I thought to myself “can I finish myself with no hands?”
Now for the people who don’t know, men can make themselves feel more pleasure and sensitivity by tensing their legs and butt, in a sudden burst of the weirdest mix of horny curiosity and determination I tensed my butt in just the right away over the span of a minute and I was so shocked when it actually fucking worked, I just made myself cum with tensing and willpower, this was ground breaking.
I have now found I have the ability to do this without even using my hands in the first place and I’m not sure if I’m God or his biggest mistake.

Edit: Oh fuck. This got more attention than I was anticipating, I am now the reddit asshole cum guy