Me: Please, I can't be mean to you; you're going to set me up with your sister! *
Her: *all excited now* Really!!!! **
Me: err... no... ***
* this is me referencing our conversation earlier in the week
** this is her thinking I've changed my mind
*** this is me panicking as I realize I probably shouldn't do jokes involving context with someone whose English is excellent, but is still acclimating to the overall culture and doesn't quite have banter down.