Sitting in a wheelbarrow in a reclining position with the handles touching the ground with beer in hand. - or - a sexual position in which the male folds the female into the shape of a closed lawn chairs.
Zachtold me he gave her the Mercer County Lawnchair last night.
The gentleman takes off his belt and inserts it into the ladies' anus. He then proceeds to remove it and strike her across the back with the soiled end until she resembles a dirty lawnchair.
My girlgot wasted at the governors ball so I had to give her a dirty lawnchair.