Personal favorite is twat waffle
…you fight like a cow!
They couldn’t pour water out of a boot if the instructions were on the heel
We have a similar one to this when someone is incompetent which is “They couldn’t organise a pissup in a brewery”.
“Are you a professional moron, or just a gifted amateur?” - Carl Johnson, GTA: San Andreas. Top tier.
I never understood if that was directed at the car I just crashed into, or me (as the pilot)
“Wow, you’re the worst part of both your parents”
Please apologize to the tree that produced the oxygen you breathe.