A friend of mine challenged me and said I couldn't eat an entire bag of jelly beans. I'm super competitive and had to prove her wrong. 
Oh my, did you get a sugar rush after that? Your dentist must love you.
I had such a sugar rush and then crashed hard after hah! I felt like I had to brush my teeth for an hour that night.
That's not surprising, but now your friend knows that you are the undisputed champion.