We had a good one 10-15 yrs back. A car dealership offered ANY car on the lot in some sort of prize deal. And they would pay the first payment for the winner. The winner chose a brand new 'vette. WHat the dealership wasn't thinking about is they also allowed the winner to chose how MANY payments were to be made on said car. (Obviously thinking at the time that since cars were just getting really expensive, the winner would pick 60 months etc)
He chose ONE payment and the dealer went to court. They ended up paying for the 'vette and the guy even had his legal bills covered.
