Mine was working in a tyre storage unit manually unloading 4x4 tyres out of containers or out of the back of trucks. The worst was rainy cold days. Hand blisters were a daily thing and you'd be soaked and freezing all day long. A lot of the tyres were ridiculously heavy and left me exhausted at the end of each day. All for a measly 6GBP/h.
What was your worst job?