An excuse to get out of a sticky situation by coming out as gay, and thus attempting to undermine the wholepoint of the allegation.
Guy 1: So I owe you some money after a game of poker. I don't remember this ever happening though and I deeply apologise, these allegations have made me address other aspects of my life and it is now that I choose to live my life as a gay man.
Guy 2: Dude don't use the Kevin Spacey Defence
This is a nickname for a person with the name of casey who is... well lets say odd. Thus they are typically a dumb shit who often loses train of thought, and cannot focus on anything for more than 6-seconds. If you were to see a "spacey casey" in the wild or even converse with one, you may hear the word "what" several times, and the phrase "i forgot" several times. With that in mind most "spacey casey's" make good friends... as they do forget everything. I do happen to know a "spacey casey", and shes a good friend.
Person 1- Hey casey your satan.
Person 2 (spacey casey)- Your so mean. I hate you!
-Next day-
Person 1- Hey casey whats up?
Person 2 (spacey casey)- Nothin, your my bestest friend ever!!!!!!!
The act of a man sexually assaulting other men while in a work place or a bar and declaring that your gay as a cover up for your misbehavior.
Peter: Man, did you see that guy who would dry hump us at the office every day?
Nate: Yeah, what news about him?
Peter: He pulled out a Kevin Spacey.
Nate: So?
Peter: He's gay!
Nate: So what? He's still a pervert!