If you could be given one skill or ability, which would you want, why would you want it and what would you do with it?

If i could be given one skill or abilty. It would be that i could just listen to the teacher talk while he/she would explain something in class and it would just stick with me. I would never forget or have to study for a quiz becuase it would already be stuck with me. There are some people that dont study for exames, test, quizes, and they always end up geting an A or B. My sister is like that she is in middle school and she is in gifted classes. She goes straight home and goes to soccer practice somes home around 6:00 then goes to her room and talks on the fun. She does get homework and she still manges to have good grades. i eny that in my sister not in a bad eny and good one. I wish i could have that ability or i should say SKILL that she has. I would be real happy