Sources, left to right and top to bottom, as far back as I've succeeded in tracing them:
1. Modified from http://lh3.googleusercontent.com/
2.Modified from a post at http://jogosts.blogspot.com/2011/02/
3. Here's one whose exact originator I've been able to trace: modified from https://imgur.com/tA78xWb by @fugulolo: https://www.reddit.com/r/gifs/comments/
4. Modified from http://oi47.tinypic.com/2nropyh.jpg.
5. Modified from https://lh3.googleusercontent.com/
6. Modified from http://files.fatakat.com/2010/5/
7. Further color modification of the source of #2.
8. Taken from http://f0.yomowo.org/c/298B07/224905/
9. Modified from http://www.animated-gifs.eu/