Poker Machines?
No offence, BUT you must have rocks in your head, you must!
Clean off ya rocker.
Not the full quid.
Sandwich short of the full picnic.

Also no offence intended.

9 cents in the 10.
You've dropped a spanner.
Got a screw loose.

In other words , a right raven nutter!

I hope you weren't offended because no offence intended.

Cheers

Odd ball .
(I couldn't help that one)

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Cheers.