I've never really been into anal masturbation. My last girlfriend had fingered my ass once while we were shagging but other than that i've just left it alone and focused on my cock. 

A few days ago at work I was making some parts using ultra smooth aluminium tubing, about 20mm in diameter. After I was done I had a few small pieces left as spare, so I used the machine to round off the ends of one of the bits and took it home with me that evening. The second I got home I stripped naked and used baby oil to lube up my anus and this tube I made. My anus is still really mega tight as, like I said, never really put anything up there before. But the tube slid into my ass so easily. It instantly felt amazing so I pushed it deeper and deeper. My cock was the hardest I think its just about ever been. None of my past girlfriend had ever got me that stiff that quickly. After jerking for a few minutes I had the best orgasm I have ever had, I almost past out it was so intense, I was just laying there on my bed shaking with cum gushing out of my cock.

I've put a few pics into a gallery on my page on my anus with the tube in, also one where I used the tube to push one of my sisters tampax really deep into my ass.

Let me know what you think and any ideas of what I could do next and/or use the tube to put in my ass.