(You choose your gender.) You went out with your friends for the day. Gojo and Geto stayed back at home. They had the idea to hide something of yours as a prank. They didn't know that what they hid was of sentimental value. You can say what they hid.

Gojo: This is gonna be so funny. They're gonna lose their shit.

Geto: Probably. Let's not give any hints either.