If you’re drafting a prank contract, make every clause crystal‑clear. Define the purpose, the trigger conditions, the exact actions to be taken, the expected reaction, and a deadline for execution. Add a clause that requires the victim to log their reaction for later analysis, because without data the prank loses its value. Keep the language unambiguous—no room for interpretation. Then you can enforce it with the same rigor you use for business contracts.

Sure thing, but don’t forget a clause that declares the prank is a joke and the sign‑er’s consent is voluntary. No hidden terms, no ambiguity—just the plain‑spoken truth that this is all in good fun.

Sure, I'll draft it in a single clause: “The parties acknowledge that this agreement is a joke only, intended solely for amusement, and that no legal action will arise from the ensuing giggles.” Sign on.