be wet behind the ears
US /bi wɛt bɪˈhaɪnd ðə ɪərz/
UK /bi wɛt bɪˈhaɪnd ðə ɪərz/

1.
toy, deneyimsiz
to be young and without experience
:
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He's still wet behind the ears, so don't expect him to handle this complex project alone.
O hala toy, bu yüzden bu karmaşık projeyi tek başına halletmesini beklemeyin.
•
When I started my first job, I was completely wet behind the ears.
İlk işime başladığımda tamamen toydum.