I’m talking, of course, about Google’s auto-generated captioning. Most YouTube videos with speech have a little CC button. Click it when you’re watching something that has the option, kick back, and get ready to take in an absolutely joyous experience.
For some videos, there are captions built in. If this is the case, click the gear icon, then subtitles, then change it to Auto-Generated.
Try it on the following videos, which are a couple of my favorites with captioning. It tends to be funnier on videos where the person is speaking quickly or with an accent. (Warning: Some are NSFW!)