The Brief: Jenky or janky means "in a state of disrepair."

Bluesquiggle
DEEP DIVE

Jenky or janky describes something that is just barely in working order, often to the point of being sketchy.

https://twitter.com/Mad_Chortler/status/1084962100416520192

https://twitter.com/Adam_L_Smith8/status/1099400115696091137