Used when you’re completely wiped out, like someone’s pulled your plug. It’s stronger than just tired or sleepy, more knackered, mentally fried, and running on fumes. You’ll hear it after a long shift, a grim commute, or too much peopling. Can also mean you’re a bit stunned by news, but the vibe is still drained.
"I’m proper zapped after that shift, mate. Brain’s fried and my legs are jelly. I’m skipping the pub, going home for a brew and bed."