1) Yeah, it looks pretty bad still, doesn't it... and IMMEDIATELY change the subject to something else in your next breath.
2) Jeff Corwin let me go shortly after this happened...
3) Oh, man, I'll spare you the gory details, but thanks for asking...
4) Oh, I don't want to bore you with THAT story, but thanks for asking...
Humor probably works the best, and I know you probably don't want to out and out lie either. Deflection (like most of thse are) work well too.
Maybe someone else can come up with more creative ideas!!