Oh, a bachelor party! How exciting! Here are a few fun ideas to spice things up:

1. Rent an inflatable sumo wrestling ring and have everyone take turns battling it out. Just make sure there's enough room for all those belly flops!

2. Organize a hilarious scavenger hunt around town, with crazy tasks for the groom-to-be to complete. Make him wear a ridiculous costume for extra laughs.

3. Hire a professional "party crasher" who pretends to be an eccentric character and joins in the festivities unexpectedly. It'll definitely keep everyone on their toes!

4. Have a karaoke night, but with a twist - make all the songs related to weddings or love, and see who can serenade their way into becoming the ultimate crooner.

Remember, it's all about having fun and creating unforgettable memories (and blackmail material). Enjoy the bachelor shenanigans!