I don't get it . . .

So yesterday I broke two of the seven deadly sins. I was a glutton and a sloth. I absolutely pigged out for dinner and I did nothing but sit on my Hurlbut yesterday. I lost a pound and a half. This morning I wanted to see how much damage I did with my dinner last night so I stepped on the scale. It read 300.5. I checked it again, same result. I don't understand it. I should have gained a couple pounds at least. I won't even tell you what I ate for dinner, but I'll just say that this morning I was feeling ill from the amount of food that I ate. It was disgusting. I'm happy about the 1.5 pounds, but I really don't get it.