No Drop

I have a little woman in the village who I get to run up my trousers. She charges €6 per leg.

Often I don't particularly need it done but I like to give her the business anyway.

After she'd finished today she said to me, "These trousers won't drop properly".

I looked down at them. I had no idea what she meant. "I've no idea what you mean", I said.

"There's no drop", she replied, by way of clarification.

"Is that bad?", I asked. "Having no drop".

"It's depends", she told me.

I asked no more questions. She was clearly in one of her moods. Perhaps her husband, Jim, had gone off fell-walking again.

I'm now wearing trousers that apparently have no drop. But no drop of what?