The best "prank" I ever pulled in the Air Force was I beat a guy at backgammon for $200. I let him "work off" the money he owed me, otherwise I would have gotten nothing. I was living in the barracks at the time.
I had him ironing my cloths and shining my shoes. Then I started hiring him out as my "house boy" to others. He got real mad...he was like my personal servant. Everyone in the barracks got a good laugh out of me having a house boy.
We Security Troops were positively evil to each other.
We were talking about choir practice (Pounding beer after a shift) one time and a new guy asked what that was. It being around Christmas, we told him that we always sang a carol for the Flight Chief during Guardmount before Christmas. Asked him if he could sing. Dummy said yes. He practiced for the "solo" for two weeks while we drank beer.
He was halfway through "Silent Night", in the middle of Guardmount before he realized he had no backup singers and the Flight Chief was looking at him like he was nuts. Good thing the boss had a sense of humor like ours or we would have been screwed