What was your prom/graduation anthem?

What was the it song that everyone knew the words to when you were at prom and graduation parties? For me it was We Are Young by FUN.

Tonighhhhhhhhhhhhtttt we are young. God it was so true. Lil ol 18 y/o me with bright eyes and bushy tail. Me and my friends drunken— not drunkenly just overzealously singing that absolute bop not knowing things would never be the same.