as stiff as a poker , auch: as stiff as a ramrod

I was as stiff as a poker, and as red-hot with pain.

Come here, Amy, and do the fainting scene, for you are as stiff as a poker in that."

He went on gravely, his eyes twinkling, "As stiff as a poker--I longed to pinch you to see if you were real.

She sprang into my arms and gave me a number of hearty kisses and then, looking over her shoulder to be sure that no one had come yet, she pulled at the strings of my pyjamas and before I knew what she was up to had my prick in her hands as stiff as a poker.