Your mission, should you choose to accept it: Guess the commonest words. You have 5 minutes.
It’s harder than you think.
I got 45 the first time. I did it again and got 47; that’s not much improvement. Via LanguageHat, who got 47 on his first attempt.
I “played” a similar game months ago, where you had to type in the names of colors. That was challenging, too. I can’t find it now, though.