This may seem a little prudish, but as a new SO and MSO user, I found the badge descriptions a little less than fully intuitive. For all you old-timers, here's a privileged glimpse into the observations of the ignorant and uninitiated...
For example, the Scholar badge reads:
"First accepted answer on your own question"
An initial quick read of the hover-over description led me to believe this was tongue-in-cheek, meaning
"You accepted your own answer. You must be a scholar. Heh."
Since I knew that wasn't the case (on either count) I re-read it more carefully and realized it was still ambiguous. I think the word "First" is troublesome on this badge and might be more easily understood if it simply said something like:
"Accepted an answer on your own question"
Similarly, other badges that have the word "first" seem less than straight forward. The Teacher badge ("Answered first question with at least one up vote") could easily be taken to refer only to the first question I answered, rather than the first time an answer was voted up. Same with Student badge.
I know these seem like nitpicking, but these sites are great precisely because they cut out the ambiguity and get to the meat of the matter. This seems like the place to bring up even the trivial.