Talk about menial activities like obligations
“Oooh. I don’t know if I can. I told my boyfriend I’d sleep over that night.” So…that’s it? You told him you’d sleep over? You don’t have anything in particular you’re actually doing that night, you just told your boyfriend that you’d sleep over on Thursday, just like you have for the last 43 nights, and so, you probably can’t come to the concert with me? Okay. Makes perfect sense.