Well I got to be the instructor for that day's class :)
My favorite is short example:
In that way, you will be acting as true children of your Father in heaven. For he gives his sunlight to both the evil and the good, and he sends rain on the just and the unjust alike. Matt. 5:45 (NLT)
Rain in a semi-arid agriculture area was a good thing. People read it and think God sends bad things to also. So when something bad happens people will quote this verse.
I also like the Prodigal Son (It really is the Parable of the Older Brother). People miss the main point and think it is about bad children coming back to the Father (Its a side point) The main point is the Older Brother was mad that the Father was nice to the bad son.
Tangential, but the most misquoted text is 1 Timothy 6:10 "For the love of money is the root of all evil". Most people elide "the love of" which totally changes the application.
