The day you're allowed to shoot fireworks at your mom and not get in trouble for it.
Bob - Happy 4th of july
Bob - *Lights bottlerocket, waits for the fuse to be short, aim at mom.*
Bob - WATCH OUT
Mom - ladddy daah
Bottle rocket - BOOOOOOOOOOM
Mom - *Runs in the same spot screaming*
Bob - MUST OF BEEN THE WIND