I drink (decaffeinated) tea and coffee all the time except when I'm sleeping, too busy, or can't get to a kettle. It's a habit, almost an addiction, and very little to do with genuine thirst. I also avoid salty foods. So it's unusual for me to get thirsty, and if I do, I hardly get the time to notice before the next cup of tea or coffee. I get annoyed if I can't get to a kettle - thirst might enter into the equation but I don't really notice it because of my habitual drive to drink regardless.
With food, I either avoid it or I pig out on anything tasty that's around (more for the flavours and sensations than hunger pangs), depending on my mood. Much of the time I can't be bothered to eat, and habitually prefer small meals. I don't notice hunger very often, and often when I'm offered food I accept it for social reasons, thinking I'd rather not eat, though once I begin to eat, I often realise that I like it and must have been quite hungry. I explained that to somebody once and they said I must be really preoccupied - that's true, my mind focusses on whatever I'm interested in, and I guess I've learned to habitually fight hunger pangs until they don't really affect me.
The only time I do feel hungry is if I forget to eat before I go to bed, and then I have a dilemma, wnodering whether it's worth getting up and eating. I find it hard to sleep if I'm hungry though, so I make an effort to remember to eat before bed. I've heard that most people have trouble sleeping if they eat before bed, and that's always surprised me. I don't like breakfast either, and usually don't eat until lunchtime. I've heard that's not good for you and that it can mess up your concentration and make you feel weak and dizzy, but it doesn't bother me, and if I do eat early then I just feel bloated.
I'm amazed at how many people are overweight and have enormous "spare tyres" - I feel much better just eating small amounts, and I hardly drink any alcohol, so I'm fairly thin, and when I want to stuff myself with cakes, chocolate and chips, I can do so without worrying about gaining weight, because I never feel like doing it on a daily basis, so my weight always stays the same. I feel quite lucky, my weird patterns of consumption have saved me from health problems that a lot of people find impossible to solve. I don't go down with malnutrition because most of my meals are raw salad sandwiches, and I'm in the habit of being careful about the nutritional and health properties of my staple diet. No vitamin and mineral supplements either. Can't be bothered, don't trust them.