When I was at my first college about 5 years ago in a small hicktown there was a migrating prank between all my friends.
Every once in a while a big piece of ice (usually in a very *cough*adult*cough* shape, with an obvious wrapper) would be moved from freezer to freezer. Also the wrapper had to be signed with something silly.
Only rule was a person had to add a #2 to the migration if there was no more room to write on the 1st.
This continued for about 4 months...
Well I got the whole collection the day before finals and I had to add #14...as organized as I am I just dumped them into an old popsicle box. Later I snuck them over to a guyfriend's place, assuming he had be quietly educated in the game....
3 days later during a family thanksgiving (which I was asked to join) out comes HIS GRANDMOTHER asking "_____, how do you open this?" in front of the whole family... who all look like. This is when I realized no one had clued him in. Uhhhhhh ohhhhhhhh
Realizing I was in a heap of trouble I fessed up to the whole family explaining the game so my buddy wouldn't get killed. Thankfully everyone laughed to tears once they began reading the sayings on them.
Unfortunately, someone in his family is keeping up the game because a 12 pack of them ended up in his freezer last month during his wedding, which his new wife found...