Ok, can someone please explain what this means?

I know what it translates to – “masuk angin” = “enter wind”. Ok, I get that part, but if anyone is not feeling well, and you ask them what’s wrong, they reply with, “masuk angin”.

I’ve been here going on two years, and I have yet to find anyone who can explain to me what the hell that means. Wind is entering your body? People who ride motorcycles often will put something protective over their chest when riding (often a piece of cardboard), to keep the wind out.

I know, I know, it’s another stupid “bule” question – but I would like to put this one to rest.