Things can literally be "too cute" and it shorts our brains out causing feelings of aggression towards the too cute thing.
Like, how people talk about eating a babys toes, some people are repeating a saying, some are honestly experiencing the urge to do it because their brains are overloaded with cute.
Like in Fight Club where Jared Leto was too pretty so Edward Norton bashed his face in.
It's not some maladaptive behavior or anything though, it's just whatever thing you're looking at is literally too cute for your brain to comprehend.