(as) thick as two short planks

US /əz θɪk əz tuː ʃɔrt plæŋks/
UK /əz θɪk əz tuː ʃɔrt plæŋks/
"(as) thick as two short planks" picture
1.

غبي جداً, أحمق للغاية

very stupid

:
He's (as) thick as two short planks, he never understands anything.
إنه غبي جداً، لا يفهم أي شيء أبداً.
You'd have to be as thick as two short planks to believe that story.
يجب أن تكون غبيًا جدًا لتصدق تلك القصة.