many and many's the time (that)
old-fashioned Something has happened or one has done something a lot of times before in the past. Many and many's the time that I've made mistakes, but I've always owned up to them and accepted the consequences. Living with insomnia is a waking nightmare. Many and many's the time I've spent the whole night wandering back and forth between rooms, just trying to find a way to pass the hours till daybreak.
many (and many)'s the time
there have been many times. Many and many's the time I warned him not to go to the swimmin' hole by himself. Many's the time she's forgiven her husband.