one's eyes are (out) on stalks

/wˈɒnz ˈaɪz ɑː ˈaʊt ˌɒn stˈɔːks/

/wˈʌnz ˈaɪz ɑːɹ ˈaʊt ˌɑːn stˈɔːks/

one's eyes are (out) on stalks

used when one is looking at something with a great sense of wonder or surprise

1.1

used to describe a situation where someone is looking at another person in a way that suggests they are sexually attracted to them