I remember there was a commedian who said "you ever see a kitten so cute, you just want to strangle it death?" or something to that effect. The audience seemed to relate.
It wasn't. I think it was Bill Burr or Louis C.K. Some sort of short, fat, bald comedian, I guess. I get them all mixed up. And it could have been a kitten instead of a baby. But I remember it because, yes, I have felt a bit like Lenny from Mice and Men and wanted to cuddle a cute thing too violently.
This so much! It only happens when I play with really young kittens, but I find myself handling then rougher and rougher and I just need to stop playin because I get the feeling "I'm going to strangle this thing because it's too cute!".