When a healthy, capable, able to walk person who has no need for a wheelchair, buys, rents, or steals one for their own personal amusement, laziness, or gain. Non-powered models promote pity by unknowing bystanders, and can be used for preferred parking, meeting women, getting VIP access to clubs, etc. Powered models, known as rascals, are usually attributed to very lazy people not wanting to walk under their own power, or people that like to perform motorized stunts.
"Look, Jimmay's pulling the weekend wheelchair warrior again so he could get right into all the clubs and meet chicks. See, they are eating up his Gulf War landmine explosion story. I bet he scores tonight......"