This post has not been vetted or endorsed by BuzzFeed's editorial staff. BuzzFeed Community is a place where anyone can create a post or quiz. Try making your own!
Best Tip Ever
Not every customer sucks. Most are pretty decent, and some (like this one) are awesome!
Want to get your very own quizzes and posts featured on BuzzFeed’s homepage and app?
Become a Community Contributor.
Become a Community Contributor.