Who knows the joke about mosquitoes?

One day two people were discussing a topic:

Mosquitoes dare not stare at your face when you sleep. Another person asked why, "because I was afraid your face would crack" (your face was too slippery).

Another person said, that mosquito is even more afraid to stare at your face. He asked why, "Because I'm afraid it will fall on your face, my leg won't come out" (my face is too pit and my skin is poor).