Burnt slap up

1) to be completely burnt.

2) In the case of mechanical repairs it can refer to a busted engine, compressor, or motor.

"Sorry sir there's nothing I can do for your A/C. The compressor is burnt slap up"

Yuckafull

utterly disgusting, something that would gag a maggot.

Hey mark, did you smell her cooter that shit was yuckafull!