pop-eyed
From Longman Dictionary of Contemporary Englishpop-eyedˌpop-ˈeyed adjective informal 1 SURPRISEDhaving your eyes wide open, because you are surprised, excited, or angry2 having eyes that stick out slightlyExamples from the Corpuspop-eyed• Nutty had a glimpse of the bus-driver, pop-eyed, standing on his brakes.• Thirty-two, tall, rubber-lipped, pop-eyed, very smart but no culture so just wised-up: that's Witney.