Since 1981, a series of cryptic ads have been placed in the Arizona Daily Wildcat at least once a year on May 1st, by a group calling itself “The Orphanage”. I first came across the site with the scans (as linked on wiki) a couple of years ago. There’s a new ad out as of Dec 5th.
It’s seriously cool stuff (if you’re into cryptic puzzles).
Hello
p
Bye
Hello
p
Bye