Once a Viet masseuse did it for me. She kept the steel rod inside until I explode my cum.. forcing the rod from my cock like a rocket.. lyckily it didnt hurt her face
A screwdriver?...question...are you fucking mad?! Sounding is all well and good, I actually love sounding, it feels incredible, but think of the horrendous possible internal damage that could have done to your cock, use proper instruments and sterilize for gods sake!