Nice guy 180

The point in a conversation where a nice guy, having been rejected by the object of his desires, drops the gentleman act and does a 180 on his attitude, revealing himself as the petty, entitled man-baby that he is.

"You are such a wonderful person. You deserve someone who will take care of you, serve your every need, and never hurt you. Will you do me the honor of allowing me to be that man?"

"Oh, that's sweet of you to say, but I'm just not interested."

"You stuck up bitch, I was doing you a favor pretending you're worth anything, and you think you're too good for me? 21st century women are all spoiled sluts. Get cancer and die."

"...annnd there's the nice guy 180."