Scare the Stag out of his Wits:

Looking for a fun prank for a stag party? Then this is it. You will love the look on the groom’s face as you scare him out of his wits with a wardrobe scare. Before you leave for the wedding, get someone to tamper with the stag’s suitcase and replace a few pieces of his clothing with things he would never put on even in his wildest dreams. You can cut out cheeks off his trousers or replace the underwear with a frilly knickers and a lot more. Just make sure that you hide your own suitcase well before the wedding as you alone know what is to happen once you get there. You will be laughing your head off while the groom will be clueless and have the blankest expression of his life on his face. Just wait and watch the fun unfurl once you get to the wedding!