YOU SAID:

my units gain experience by twiddling their thumbs and doing nothing

INTO JAPANESE

私のユニットは親指をいじって何もしないことで経験を積む

BACK INTO ENGLISH

My unit gains experience by playing with the thumb and doing nothing

INTO JAPANESE

私のユニットは親指で遊んで何もしないことで経験を積む

BACK INTO ENGLISH

My unit gains experience by playing with the thumb and doing nothing