i was taking orders and my starbucks puts personal cups in a large mug to reduce barista contact with a personal cup for our hygiene and the customer’s (not sure if other starbucks do this too). so this customer got her personal cup discount and i had her place it in the mug and then i gave it to the partner on bar. so then this guy come up to me and says he wants a mug of coffee. i just thought maybe he misspoke or something so i just rang him up for a simple cup of pike. he went to use our restroom and i grabbed the pike and put it on the bar. a couple minutes later, i was grabbing something from bar when i noticed him standing there so i smiled and pointed to his coffee and said “your coffee is on the bar.” and he said “i ordered a mug.” i was confused so i said “you didn’t give me a mug” and he said “no i ordered one of YOUR mugs.” i was like “we don’t give out coffee in mugs” and he said “yeah you do i just saw you give a customer that white mug” and pointed at the personal cup mug at reg. so then i realized and explained the personal cup ordeal and he said “so i paid $3 for this? that’s stupid.” i put on my best customer service face and said “sorry about that” and he responded with “no shit” and walked out grumbling to himself. i walked away and my shift lead told me to go decompress in the back for a couple minutes since it was an intense convo. like sir if you wanted cheap coffee go to mcdonald’s down the street. since when has starbucks been known to give out mugs too lol??? ugh the life of a barista. thank god my shift was almost over