I know... also people with ADHD are very forgetful... I have about 20 napkins in my room cause whenever I get something to eat while I am at the PC, I bring about 2 to 3 napkins but I always forget that I already have some left from the last time I eated in my room...
Another thing, which may look ridiculously stupid is that sometimes when I am bringing food to the living room (the best tv in the house is there, so why not?), I go to the kitchen to get plates or something else, then I start daydreaming/get distracted by something/random

, then I get back and realize that I forgot to bring whatever I needed to, several times in a row sometimes...
...
Maybe it's funnier for you cause you don't know how it is to actually be like that. I don't think it is that funny, but hey, I might be wrong

...or not!
EDITED: of course I am not a kid, but I think I was