I could, off the top of my head (and without using the Internet) could name 6: Rehnquist, O’Connor, Ginsberg, Scalia, Kennedy, and Thomas. Smarter-than-thou colleague Adam could name seven, but he missed Stevens and Kennedy. Neener neener neener!
Which reminded me of a set of questions with which I would strike out at coworkers and associates back when I was a young man. The one that particularly flummoxed fellow English majors who attended the same Jesuit university I did was Name six morals.. Crikey, the biblical book of Exodus quite famously contains ten. I wasn’t even asking for moral to which the answerer adhered. Just give me six. Many could not.
The other great fun one was “When was the Civil War fought?” Ikes, the years I received as an answer. 1910 was the best (worse) answer I got. Seven years before World War I. Of course, the respondent wouldn’t have known that, either.
Undoubtedly you, gentle blog reader, are better steeped in civics than printers (those who run printing presses), so I expect you could name at least six Supreme Court Justices (because this very entry names seven). However, feel free to challenge your pub mates, and to name their senators and congressional representative, as well as governor, state assembly rep, state senator, mayor, and alderman.
Perhaps if we can shame them through pub bets it will increase their civics knowledge. Or at least get us free delicious Guinness Draughts when we win the bet.