Have an smart watch? Even better! Stare intently at your watch with an irritated look, for around 15 seconds at an interval of every 5 minutes.
Makes it look that you are reading all your work email notifications which you are missing out on due to this pointless conversation. They don't need to know that in reality you are just seeing how beautiful your smartwatch looks on you tiny wrist.
Alternatively, you could head out for an “Important Meeting” (i.e. 10 minutes of Nandoo walk) and get rained in dope-ass cash rewards! No pressure, totally your call, but really…