sieh mal einer an
Expression[ˈziː maːl ˌaɪ̯nɐ ˈan]
look at that, get a load of that, lo and behold; in asurprised tone, often triumphant
sieh mal einer an is a German expression meaning “look at that, get a load of that, lo and behold; in a (mock-)surprised tone, often triumphant”.