I had the cheapest customer ever today. He ordered a venti latte, and asked if we had the 10% airport discount. I asked if he had his ID. Since at this point 99% of people show me their ID I just went ahead and gave him the discount. Then he showed me, get this, a Marriot room key (which he probably stole from the hotel) and said he worked there. Riiiiigghhht... But whatever he got away with 35 cents and I went to make his drink. THEN he asked me to put the Venti in two tall cups "because he didn't want to spill it". I showed him the lid-plugs we have but he mumbled something about having kids (huh?). This is where I got a tiny bit of revenge; I gave him a 2/3rds full venti cup, and a 1/2 full tall cup. But I still put one shot in each so one was too strong and the other too weak. Now if I was that guy I would have been out of there pretty quick but this guy comes back TWICE asking me for stuff. I wanted to slap him for being so obvious while attempting to 'play me. Which unfortunately he sorta did.
At least today was a good tip day...