FIFY Years ago when I was working in a JAG office, we went after this guy for something he put on his application 20 years prior. The govt wanted to get rid of him for theft but figured it was easier to get him for making a false official statement.
Turns out that he had been convicted of rape and spent several years in jail and failed to disclose that. I asked him WTF he was thinking and he said "I thought rape was a misdemeanor and the application asked if I'd ever been convicted of a felony"
He spent quite a bit of time in jail for thinking that rape was a misdemeanor - and for gross stupidity.