Sugar Coma

I ate so much this weekend and I do not know why.
It was not as bad as when I was studying in London and on S.A.D. (aka: Singles Awareness Day, otherwise known as Valentines Day) I suggested that we all go buy a tub of ice cream each and that we get a topping and then eat the ice cream as fast as we can while sharing the toppings and whoever finishes their's first is the winner of the eating olympics. I won, but I regret it. And I have won the eating/drinking olympics four years in a row now. But ugh, I am beginning to regert this whole eating so much that I think I will explode thing. I don't know how I used to do it.
Em and I used to get together and eat like a whole pizza, cinnamon buns, pop, chips, chocolate bars and many other things and I would still feel okay. These days when i eat that much I do not feel okay. I feel gross and want to die. Maybe I should go back to drinking a lot, but I don't really want to do that either. I need some other addiction.
At least none of this is as bad as the time that I tried the healing power of food, ugh was that not a pretty night. I had a really bad day at work (really, incredibly bad) and I came home and ate: 4 pizza pops, 11 spring rolls, 6 chicken fingers, a plate of nachos with salsa and sour cream, 3 bowls of ice cream, 5 chocolate bars (of assorted variety) and a slice of cake - I really did not feel good after that. In fact I felt really, really bad.
So I wonder what it is about me that makes me forget how awful I felt the last time and allows me to consume my weight in sugar. I mean every time I do this I regret it, I sit there and feel really full and icky, but when I decide that I am going to do this I usually think - yeah! I am going to feel so satisfied by this, but I don't. I never do.
I think this may be an addiction and I may need help. Do you think that I have an eating disorder? Should I be eating more prunes to help cleanse my system (now is it just me or when you do eat a lot of prunes, should your feces have that prunelike smell? Because I have noticed this in myself and well it kind of freaks me out)? Or should I just try more self-restraint. Or should I stop smoking a big fattie beforehand and then just eradicate this problem all together. I don't know, but today I just plain don't feel good.