I loathe YouTube comments. Here's a simple browser extension to convert them to 'herp derp'. If you insist on reading the original (which is highly discouraged), click the comment.
What's new in this version:
- When loaded via HTTP Secure (HTTPS) Herp Derp now works (thanks for reminding me @Funshine__Bear)
- Firefox no longer freaks out when there is only one comment
- YouTube Feather Mode is now supported (thanks @_sjs)