When you tie yourself to the bed while your ex-girlfriend you whored yourself out to dicks you down with a strap on and you get turned on when she degrades you.
Person 1: "god Aidens gone down the wrong path"
Person 2: "how so?"
Person 1: "He's done a Dirty Aiden Lammie"
Person 2: "oh for god's sake what a bitch"
The act of masturbating whilst submerging your scrotum in a teapot of boiling water, and then finishing it off by ejaculating into the teapot, garnishing with flakes of burntskin, and serving to an unsuspecting person.
"Your grandmother asked for some tea, so I gave her a Dirty Aidan."