A Siriusly Good Prank (Marauders/Jily/Wolfstar)

"Are you serious?" "No...I'm Lily." For seventh years James Potter, Sirius Black, Remus Lupin and Peter Pettigrew, October only means one thing (and it's not Halloween, or the first month in like six years the full moon comes out twice, or the Fail At Asking Out Lily Evans Week): The annual Marauder Prank-Off. (this d...