Every Monday night I play football, and occassionally I remember to take a bottle of water with me. When I don't, the first thing I do when I get back is drink a cold glass of Ribena. Mmm.
I've got into the habit of having short philosophical discussions in my head as I drink. It goes like this:
I'm really thirsty gulp this is good I love Ribena gulp how come it feels so good? gulp there can't be many more experiences gulp as pleasurable as this gulp having a drink when you're really thirsty gulp what is pleasure? gulp where does it come from? shlurrrrp
And then I have a second glass, which is never as satisfying as the first.
Maybe it's not so much a philosophical question as a biological one, but I'm no good at biology.