It's a little scary to drive when it's windy out and your car keeps getting blown all over the road. amirite?
When you're about to fall asleep in class, it's good to think about mind-boggling questions (like, does the universe ever end? Is there a God? Why aren't dogs in control of earth?) because it gets your brain working, thus keeping you awake. Amirite?
Even if the comic isn't funny, the " you don't say" face always makes you laugh. Amirite?