Why does it feel so good?

Putting a shard of meth in my ass led to pleasure I hadn't thought possible.

Ahhh, a weekend and a big bag of meth shards all to myself. I had never done a "booty bump" but lately I really wanted to try it, after my former roommate told me about the time he had with a girl doing a shard each. So I sat on the pot for a long time then used the hose without the shower head on it and I ended up a very clean machine. I shaved all my pubic hair off, grabbed my big jar of Vaseline and headed to my room.
I brought up some porn on my laptop and put my towel on the bed then I got on and pulled a good sized shard out. I dipped a finger in the Vaseline and rubbed it all around my butthole. I grabbed the shard and pushed it in as far as my finger would go. It burned just a little and I started doing kegels, it felt good but it needed to dissolve a little, as it did, I felt it kicking in. I now needed it deeper, my freshly cleaned ass was hungry and it started to amp me up good.
So into my nightstand I reached for the several toys I had that I always used on my girl. A g-spot vibe, a pretty big butt plug and a 12" X 2.5 to 3" dildo. I was really spun hard and the kegels were non stop. So I lubed the plug and slowly started to slide it in but I felt like it was slipping passed the shard so I pulled it out and lubed up the dildo and I was rushing and felt good then slowly, very slowly, I pushed it hard and my hungry ass relented and the head popped in. Fuck, it felt big, it will easily push the shard in.
It was time to inch it in, still slowly and my ass just kept doing kegels, biting down hard on the invading fake cock. It shocked me how good it felt, too damn good, all while I was rushing hard as the high kicked in. Inch by awesome inch, stopping with about half of it in and damn it, too fucking good.!! So I applied pressure and in between the clenching spasms, with steady pressure, each time the clench relaxed, more slid in and OMG, sooo good!!!. Precum was pouring out of my cock like never before and my ass was buzzing and twitching and next thing I knew, 12 inches of fat dildo was buried all the way in up to the dial for turning it on. So I did just that and Yee fucking haw!!! That thing was vibrating my prostate and more precum poured out so I slid it out to just the head then very slowly back in until it was to the dial again.
I was getting crazy thoughts now and dragged my finger through my leaking precum and I put my finger in my mouth and OMG, no wonder women loved sucking cock, the precum was so yummy, not salty but a bit sweet if anything. So now I flipped around with my feet above the head board and I let my legs drop with feet above my head so I was on my neck and shoulders, my cock pointed at my face and I milked precum directly into my mouth. I started fucking my ass and gulping down my precum and I was building up that feeling of an impending and I could tell, a huge orgasm. Then the point of no return hit and my ass clamped down extremely hard and boom, I started cumming with an explosive power shot onto my face as my legs shook and rope after rope hit my face and I opened wide and pumped five or six more big gushing ropes into my mouth as my ass was clenching as fast as a machine gun, over and over and I wasn't done. With only twenty or thirty seconds in between, a second orgasm hit with less strength but the circumstances in my mind amplified the experience and it was the biggest and best orgasm I've ever had. Mmm, what a mess, and my cum was not as yummy as precum but the whole event was better than I could've imagined.
So I ended up doing another shard a few hours later and I came several more times in the next four hours and next I knew, it was a new day already. Now, every time I re up, I do a booty bump and I wish I'd started doing this twenty years ago!! If any of you like to get spun out, try a booty bump at least once to see what you think.