下着を買いに行くんだよ。お前、まだノーパンだろうが。

tbd

We're going to buy underwear. You're still not wearing underpants, are you?

私は新しい下着が気に入っている。

tbd

I'm pleased with my new underwear.

下着までビショビショです。

tbd

I got soaked to the skin.

下着は着けたままでいいですよ。

tbd

You can wear your undershirt.

汚い下着を人前で洗うな。

tbd

Don't wash your dirty linen in public.

唯一の証拠は、下着に付着していた精液の痕跡。

tbd

The only evidence was the traces of semen stuck to the underwear.