Oyaji-do
The art of being old and lazy. Easy to learn but difficult to master. Some benefits include:
1) Sucking your teeth in a loud and annoying manner.
2) Every time you stand up, sit down, or generally make any sort of body movement it must be accompanied by an incoherent audble.
3) Stare lecherously at the teenage girls on the train in the summertime.
4) Should you fall asleep on the train, always spread your legs as wide as possible, lean your head back against the glass, and slumber away with your mouth agape.
5) Fight others for that favorite bento at the local grocery store at exactly 7:30 pm when the manager comes out to put the 50% off stickers on the product.
Etc.