My mother used this phrase often when I was a child. It’s the exact equivalent of “Made you look!” I just googled it to find out how common it was and to my surprise received not a single hit (variants such ‘monkey looks’, ‘monkeys look’, etc also came up empty). I can’t believe that this was somehow peculiar to our family, although I suppose it’s possible.
Has anybody else heard it, or a phrase similar to it?
(On a sidenote, when I was very small I used to hear it as ‘monkey liver nuts’, which was puzzling, but not more so than many of the oddities that adults came up with, so I never queried it. Then, one day, the mists cleared, and I understood what was actually being said. My very first mondegreen!)