Use "act big" in a sentence

1. Lorna was just about to tell him that she also used to ride, when she was nearly knocked off her feet by two huge hairy monsters and gave a startled shriek before she realized that they were in fact big dogs with light-colored wiry hair and very long legs

2. � That file was in fact bigger than any other file on Germans of this war, save for one on Adolph Hitler and another on a Waffen-SS officer named Otto Skorzeni

3. Our studies suggest P/E ratios are an end effect of accelerating earnings that, in turn, attract big institutional buyers, resulting in strong price performance