You learn something new everyday! So apparently, if you order at Starbucks and get your cup back with a giant label slapped on top of the logo, you've probably pissed off your barista! An employee of Starbucks was revealing some secrets on Reddit, and explained:
"My petty joy is putting stickers on the siren logo when annoying teenagers order millions of fraps at once so their Instagram posts are ruined ¯\_(ツ)_/¯ it's the little things."
So if you get a sticker, you've probably made them a little upset LOL.