Yup, better than angry birds. It's called "angry commenters" and it's not even an app.
Here's how you play:
First, find a comment or commenter on a thread that seems dumb enough play with you. Shoot, you can probably find one right below this post!
Second, reply to said comment with sarcasm, cynicism, or whatever you fancy.
Watch as the original commenter spends gobs of time trying to defend themselves.
The rules are quite simple: don't spend more than 30 seconds on a post.
Bonus points for getting others in in your thread.
Easy targets such as those with obvious mental issues are good for practice but points don't count.