The commonly heard "4th R" is good- if you don't mind those goofy word plays.
Guess it's no worse than using an "R" for 'rithmatic. To think about it
though, do most people even know of the 3 R's anymore? Oh, sorry. Just
ramblin'. Boy, it's nice to have the time to think!!! Ahhh-summer!
Bloomington High School