I was once practising a PFL in South Africa in a C152, I got rather low and didn't really notice that the field that I'd picked had quite a significant upslope. I was set up perfect to come in when I realised that I had nowhere to go...slammed open the throttle, pitched for Vx and prayed!
As I neared the crest of the hill the ground seemed to rise towards me before dropping away again. There were also powerlines at the end of the field which I cleared by less than 100ft. That certainly got my heart racing and a few very bewildered looking farmers looked up at me from tending their crops...they must have thought I was crazy.
Once safely at altitude I realised that in my panic I'd left the carb heat on...
I sheepishly headed back to the airfield and hoped that no one had called to complain....which thankfully no one had.