「用筷子夹花生豆」means "using chopsticks to pick up peanuts" literally. Sometimes you can say it to express "it's hard to do sth.". 筷子=chopsticks 夹=pick up 花生豆=peanut

Thanks Cecelia, that is helpful.

Hi Yalqun, I have another understanding about this sentence. Chinese usually uses expression as "using chopstics to picking up peanus" to convey he or she can use chopsticks very well even can pick up very small things.