JAM

To cancel pre-arranged plans close to or at the very moment the event is to occur. Other known usages of the verb include (2. jam, v) to attempt to play instruments in a band-like fashion when few if none of the performers actually possess any musical ability whatsoever. This practice is indigenous to the parental garage. Continuous Jamming (1. 2.) activity may result in loss of friends and loss of hearing. Example: