you're on!

An exclamation of agreement to something that was said or that is happening, often (but not always) a challenge or a wager. A: "Want to see who can run to the end of the road the fastest?" B: "You're on!" A: "I bet you $50 that my team beats yours in the championship." B: "You're on!"

Common Names:

Name	Pronounced	Usage
Aureole	AWR-ee-ol	English (Rare)
Ha-Jun	hah-joon	Korean
Yngvildr	-	Ancient Scandinavian
EmÍLia	-	Portuguese, Slovak, Hungarian
PÁNfilo	-	Spanish
Altan	-	Turkish