What is The Twist N Lock?
This is when a woman, is performing oral sex on a guy. She does not want the guy to 'nut' in his mouth. So the guy says, 'ok.'
At 'splurging' moment the man takes his hand pulls her head as far down on his 'knob' as he can, and twists...realeasing his magical man chowder as far down her throat as possible.
I gave that bitch the twist n lock!