I'm with the girl above. I can't live without my hot cocoa. It puts a smile on my face and calms me down everytime I drink it. I used to drink the low-fat/sugar kind, but I realized how truly tasteless it is. I decided it's worth the extra calories to be in chocoloate Heaven.
If i have friends go on a weekend vacation and start feeling lonely or anything like that, I get fast food late at night. It alwaysmakes me feel better in that situation. But it has to be late at night though.
I feel better about myself after I've eaten something healthy... I guess it's more of a psychological thing, not really anything scientifically proven, but I feel like crap after I eat a lot of junk food.
I think that a person's favorite foods should perk them up. I often associate foods full of color with a better mood. Such as Neapolitan ice cream with colorful sprinkles or a salad with several different colored veggies. But as far as the typical, I think most sugary foods could cause a person to perk up. And soda, since soda has caffeine and all, but there's some people that it really affects and some people it doesn't.