There is a mute who wants to buy a toothbrush. By imitating the action of brushing one's teeth, he successfully expresses himself to the shopkeeper and the purchase is done.

Now if a blind man wishes to buy a pair of sunglasses, how should he express himself?

Think about it first before scrolling down for the answer...

He opens his mouth and says. "I would like to buy a pair of sunglasses."