“You can’t swing a dead cat without hitting a Carlos.” 

Three of the more eccentric characters in my class are all named Carlos.  From left to right, we have Carlos Andre Becker, Carlos Eduardo Ricardo, and Carlos Rosa.  One of them always seems to be present no matter where you are on campus (or in Porto Alegre, for that matter) , so we came up with the above saying.  Be very scared if you encounter any of them in a dark alley.