One's a prime number, the other's a prime minister.
Which hole they stick their finger in when no-one's looking.
A table can support itself
I can't even...
He chewed off 3 legs and was still caught in the trap
Testicles.
13. Number 9 will shock you!
One's a digit divisible by two, the other is a prime number.
Because he is PM not AM
Because there's only 2 factors involved.
Hamlet.
In the Piggy bank