Chinese people eat like savages.  They just raise the bowl full of nothing but rice up to their faces and gobble gobble gobble.  They do this because they can't see the food through their tiny eyes.
Isn't this offense to Chinese people?
For you as a westerner it's funny to hear this joke, for the chinese people present itself it's not that funny.
I don't think that this joke of Chinese people not being able to see well is funny. You should consider how hurtful this could be for a Chinese person to hear. It's important that we as a society not joke around about racial stereotypes.