Steel Toe Capped

These boots are my working footwear that I have to wear every day for "health and safety reasons", in reality it means if I were ever to drop something on my feet I wouldn't end up with a fine selection of crushed toes. I've had a bit of difficulty putting them on over the past couple of days having hurt my back somehow - it really hurts to sit down, lie down, put my boots on and generally move about apart from that everything is fine!
I've always wondered about language in relation to a bad back -"my back's gone" (where did it go?!), "I think I've pulled something", " I've buggered my back"(!) to name but a few. Anyhow, sitting on a commuter train for over an hour this morning was definitely not a good idea. When I stood up to get off I felt about four foot tall and it took a good five minutes before it eased off and I could stand a bit straighter.