When you cease to be the man you once were, and become a sad, sorry little version of what she wants you to be. Often causing the man to become passive and obedient to his woman. This usually results in a change of lifestyle such as having her change your wardrobe, no longer associating with your own friends, but instead all of her friends, etc. You become molded by her, all just to get a piece of pussy.
Recently he had become like a new person. Obviously pussy whipped since he wouldn't even hang out with his friends, unless his girl was out of town. She owns him so to the point where if he spends 20 seconds with his friends while she is around, she gets upset. Sadly he went from a cool guy, to a pussy whipped bitch.