Comes from the combination of the words "
bonus" and "toast." Legend says the word was first uttered at the discovery of an unexpected
extra piece of toast. Today, it is commonly used as 1) an exclamation of excitement; 2) as an adjective toward the cause of the unexpected emotion; or 3) as a direct noun,
Bonus Toast.
1. "Wait, Obama is president? You mean we finally
got a black man as president? Boast!"
2. "That shit was boast when the
guest performer
came onstage."