1. A redneck
party, due to the fact that most of their parties are held in the
front/back
yard.
2. Any nonspecific group of lawnchairs, particularly during any event where one must bring their own seating.
1. I was at a
real southern wedding last
night, what a lawnchair parade!
2. Mardi Gras is one of the most
common times for lawnchair parades.