Stupid school prank

Well when I was in the 6th grade I had this very good friend of mine. (though unfortunately we are no more in touch with each other) What I am going to tell you is very stupid, I know that, BUT we used to do this. Its one of the childish pranks I used to do when I was a child (obviously!!)
We made up this code names for shit and piss which were sauce and jam and we used to go around asking our friends and classmates what did they prefer, sauce or jam? And when they chose either we used to laugh at them as we were the only ones who knew about the code (because to us it meant they they liked shit or piss). It was like our most well guarded secret. LoL the stupid things we used to do when we were kids!!