This is what you would say when Eren Yeager from Attack on Titan does something gay with you but he had socks on. This is usually when you assume the role of Armin Arlert from Attack on Titan.
“Eren what the hell is wrong with you?! Of course it still counts even if you did it with your socks on!”
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi