Is That Why You're Wearing Nickers?

We've been talking about the clothes on the outside but let's have a look at the underwear. Nickers are usually only worn by women so underwear, that kind of small type of underwear that many women wear - nickers. We have an expression in English, an idiomatic expression, to get your nickers in a twist. So I may be standing here and nothing but nickers but that's a bit odd. Usually we... Very odd. It's a good thing you can't see it.