The term unit can be used when something is so particularly sweet that its actual title is not good enough. When no other term can be used to describe its need. Also, can be used to label objects that suck.
Toaster Oven AKA "Toasting Unit"
Bucket or Container AKA "A Filling Unit"
Broken Toy AKA "Shitty Unit"
Bong AKA "Smoking Unit"
Ipod AKA "Tune Unit"
Condom AKA Condamn AKA "Dong Unit"
Sam - "Hey Bro what you got"
Tim - "Oh noth'n just a robot that gets beer from the fridge when I clap my hands."
Sam - "What a sweet unit!"
Roomie "I got a chick here, where is the box of dong units"
when the batteries run out in the TV remote a proper response could entail the comment "shitty unit" while banging it on the arm of the couch.