We like to think YouTube is all about cat videos. But there's also dog videos and elephant videos. Basically any animal you can think of. Oh, and there are also videos about marijuana. If that's a surprise to you, here are 10 of the funniest marijuana videos on YouTube.

10. Top Weed Smoking Fails

9. Grandmas Smoking Weed for the First Time

8. Firefighter Gets High While Putting Out Marijuana Fire

7. Mark Ruffalo Tells Hilarious Story About Smoking Weed On-Stage

6. A Montage of Stephen A. Smith Saying Weed

5. Best Weed Vines Compilation

4. Stoner on the The Price is Right Bids 420 on Everything

3. 20 Most Hilarious Anti-Marijuana Ads

2. News Reporter Gets Contact High

1. Dave Chappelle Talks About Smoking Weed