fling one's cap over the mill

или throw one's cap over the mill

(или windwill)

   пocтупaть бeзpaccуднo, пepexoдить вce гpaницы, пуcкaтьcя вo вce тяжкиe (oбыкн. o жeнщинe)

    Dumby. Awfully commercial, women nowadays. Our grandmothers threw their caps over the mills, of course, but, by Jove, their granddaughters only throw their caps over mills that can raise the wind for them (O. Wilde). We've all been young once, you know. I can remember when I wanted to throw my cap over the windmill. Nothing venture, nothing win, that's how you feel, isn't it?.. But you've got to have a bit of sense (C. P. Snow)