When someone says something so dumb, the entire conversation is killed and you need to move on immediately.
It is the talking equivalent of aggressively holding down the off button on your computer to just shut it down, without regard for open documents or what you were doing.
Tiffany: (lisping) ARRGH!! This Snapchat update SUCKS!! (cries)
Teacher: (gives Tiffany a tissue) You have an issue, here's a tissue.
Tiffany: *blushes*
Tiffany: (takes off her glasses, wipes her tears with the tissue, cleans her glasses with that tissue and then puts her glasses back on.)
Tiffany: (sniffles, blows nose on that same tissue)