It's rude not to help with housework
John and his wife are spending the weekend at home, which needs some tidying both inside and outdoors.
John wants to get some exercise.
John gets out the manual lawnmower and mows the entire yard, getting some exercise in the process.
John goes to the gym to work out, leaving his wife to finish the chores.
John's wife thanks him for helping out, and they have a nice picnic outside on the freshly mowed lawn.
John's wife gets very upset at him and this causes a big argument when he gets home.