Had a student to constantly was flaring out too high - 5 to 10 feet above the runway. Constantly had to correct him but on the like hundredth attempt I was so sick of it I just let him go ahead with it, my plan was on letting him stall and then take the controls and recover. C172 btw.
Oh well he stalled it on allright. The instant before impact I was sure I was going to get the main gear up my behind.
(Had the plane inspected, no damage done. Amazing what these old 172s can do. And amazing how one learns the hard way not to let a student get you into something you can't get out of...)