Related to "yo shit don't work" "Old tired-ass equipment" Anything 10 years or older costing less than $25 possibly sitting on your front porch for more than a year.
"Your Atari 2600 looks awfully jankedy on your black and white television."
"I refuse to throw dubs on your jankedy-ass Pinto"
Jankedy is used when voicing your opinion on sub-par, extremely bad, unpleasant or inferior things.
"Man, that car is so jankedy. It looks like it is about to fall apart!"