When someone calls you and asks you a compromising question about someone and fails to mention that you're on speaker phone and that the person you're talking about is listening.
Jane: Hey, what do you think about Karen? (on speaker phone)
Sally: I can't stand that bitch ass hoe. (unaware of the speaker phone)
Jane: Yeah, i thought so. Oh, by the way, you're on speaker phone and Karen's right here.
Karen: Fuck you Sally.
Sally: Jane! You totally speakerfucked me.