This was posted last month by Tian at Hanzi Smatter:
Posted by Nicholas at May 30, 2008 08:01 AMWith two previous posts about the same incorrect tattoo, one would get the hint this does not mean "courage":
[The characters actually translate as] (n) serious error; gross mistake; big mistake or shortcoming; (punishment in school, etc.) a major demerit.
Visitors since 17 August, 2004