Old College Try
All subsequent popes were then supposedly subjected to an examination whereby, having sat on a dung chair containing a hole called sedia stercoraria, a cardinal had to reach up and establish that the new pope had testicles, before solemnly announcing ‘Duos habet et bene pendentes’ — ‘He has two, and they dangle nicely’
 - a wikipedia article I stumbled across while attempting to google “pope twitter”