Also, this one isn't a GIF, but it makes me laugh every time.
It is almost as funny as Spaghetti Cat:
PS- do you pronounce GIF with a hard or soft G? I've heard it is 100% a soft G, but I just am not comfortable saying it like that. Take that, internets.
(ps- I love cats. I also think they are kind of jerks, which makes me love them more)