This timely video from Second City sounds too good to be true. No pills to remember, no hormones, no nausea, expense, pain or anxiety about whether or not you remembered to utilize your current method, or doing the right thing. Until now, nothing has been absolutely 100% foolproof, but this is the answer! OPK. If you feel yourself weakening, just offer your free babysitting services for a week – or two. Do you hear the high pitched squeal at the end of the video? In a pinch, just crank up your volume and listen until a migraine occurs.