SS Experiment Camp (1976)
This is a sleazy WW2 Nazi camp movie which plays more like a black comedy. In this film the poor female POW's get raped and groped by all and sundry at the camp. In an amusing comic twist the commandant decides he wants a new pair of testicles and so removes them from one of the hunky guards. The guard doesn't seem to realise he's been castrated until he goes to bonk one of the French prisoners. This provides one of the most amusing scenes when he confronts the commandant and says "You Bastard. what have you done with my Balls?".