A fun and informative Video Urban Dictionary. You can contribute your own definitions of these words/phrases. Keep defining! See phrases like “killing it”, “bae”, and “chill” explained in 10-second videos by our community. Think you can explain better? Join us and make your own videos with SayWhat! What is it? SayWhat is a dictionary that uses 10-second videos to demonstrate and explain how these phrases are used in context. What do I use it for? • If you grew up speaking English, SayWhat helps you keep up with the latest slang. • If English is not your native language, SayWhat helps you to fit in.