Out of proportion

The conversation tonight went something like this:

Me: "I really do not feel like cooking tonight"

OH: "Let's have fish and chips then"

Me: "Good idea"

OH: "What do you want? Fish, chips and curry sauce?"

Me: "Yes please"

I know it's naff but there is something about chip shop curry sauce that just sets fish and chips off just right.

OH: "Spring Roll?"

Me: "No, hold the spring roll. I'm not that hungry"

OH disappears off the chip shop and duly returns.

Me: "Where's my curry sauce?"

OH: "You said you didn't want any!"

Why is it that when you don't feel well, the smallest, inconsequential, thing can set off a major pissy fit?