An object that is required to complete a the task at hand, e.g. TV remote, mobile phone, condom, spliff
Elenor: I need a device
Alexis: Coming up honey..
The number you 'metaphorically' call when requiring the energy, skill or courage to continue with the task at hand.
Smith: I can't make it to the pub tonight lads, I've gotta go home early
Kay: Dude, you need to call 1-800-Man-Up and get your ass to the boozer.