Sound: 6/10 once again music would have been nice. Maybe a doorbell that could sound like a women sounding surprised? maybe it exists. But what you have now kinda fits.
Animation: 5/10 needs work. Could develope into a style. Like the guys face. The girl though.... could have finished her body. Even if you censored it it would have been nice to at least see that she does have a lower half. Also her face? showed emotion but lacked detail. Oh and your finger looked like it belonged to an 80 year old man.
Idea: Good but not enough build up. Also didnt explain context or why he didnt understand. Maybe make him blind and have people gather behind him and point.