The lists, where knights joust. Tilt? Whatever you want to call it.“You’re in the lists with all your sh!t”? Say what now?
There is no non-confrontational way to confront someone, aka "say something". In my experience, friends let cockblocks slide if they were accidental or you have an explanation. Once or twice.
Someone outside your friends circle who is also the type to catcall? Pretty good chance it's on.