(one's) eyes are out on stalks

1. One is looking at someone in a way that indicates sexual interest. Of course he likes you—his eyes are out on stalks every time he sees you! That girl's eyes are out on stalks, so why don't you go over and say hi? Hey, I think this guy is gonna buy you a drink—his eyes are totally out on stalks.

2. One is looking at something with wonder or awe. My brother loves superhero movies, so his eyes will definitely be out on stalks when he sees the trailer for this one. When Matt brought out one of the original action figures, in mint condition, I swear, my eyes were out on stalks! Callie's eyes were out on stalks the first time she met Santa Claus.

eyes out on stalks

full of eager curiosity or amazement. informal

1999 Escape This breathtaking graphics accelerator takes 3D game play on PCI systems to a whole new dimension of excitement with imagery so realistic your eyes will be out on stalks.