Daniel Radcliffe, Emma Watson, Rupert Grint and Tom Felton sat down with Josh Horowitz on MTV After Hours to learn how to “speak American.”

Harowitz had the cast saying things (in their best American voices) like, “Olive Garden”, “Glenn Beck” and “Boo-yah.”

The end result? Hilarity!

I especially like the casts reaction to “Justin Bieber is the man” and Emma Watson’s reaction to “Twilight Sucks.”