How'd you react if your GF during sex said "Your Dick is much smaller than my ex"?

[zdenka]

My girlfriend for some reason told me that, her ex-boyfriends were a lot bigger than me!! :1orglaugh And this was when I was screwing her from behind I think maybe I asked her if I was big enough, and told her to TELL THE TRUTH! I got SO turned on that I came immediately

Would you be angry? or would you get turned on by it?