zips

[big bear in]

why are zips on trousers know as flies ??

[Ethel]

It's not just zips - buttoned openings are called flies too.

Fly has several meanings -one is 'flap'. Tent openings are also called flies.

So it's another way of saying trouser flap or opening. The expression 'trouser fly' has been in use since the 1840s.

[RATTER15]

The small triangle windows on old cars were also called fly windows.

[camioneur]

thats news to me Ratter, they were always called quarter lights where i come from

[Hammer Head]

Probably because if you haven't done it up properly, your knob 'flies' out.

[indie_chick5]

We say that you are "flying low" if you haven't done your flies up....Hammerhead how would that argument work on girls, since we don't tend to have "knobs"?