Twitter Coffee Counter is a Twitter bot that helps friendly workplaces in coffee accounting. It supports two simple operations: (1) "top up", to add coffee to someone's account, and (2) "drink up", to remove coffee from someone's account. To use it, simply create a private Twitter account, and ask your co-workers to send tweets to it. For example, to "top up" one coffee just "@private_account +1"; to consume two coffees just "@private_account -2". Twitter Coffee Counter also features a dashboard web app to monitor the amount of coffee consumed by each co-worker.