My friends had apparently invented a shot, so they wanted to share it with the rest of us. We get into the pub (which barely has a dozen people in the entire establishment) and go up to the bar. There are two other people at the bar besides the 7 of us. We wait... and wait... and wait... and the bartender barely even glances at us in the first 5 minutes we're there. Eventually one person in our group gets his attention and asks him to make us the drinks that they invented. It wasn't anything complicated: 2 types of liquor, orange juice, and grenadine. He mixes it for us, not saying a word, and distributes the drink into individual shot glasses.
We get read to take the shots when I realize there's a fly floating in my drink. Someone else has two in theirs. One other person in our group of 7 has one in theirs, too.
My friend politely (and I really mean politely, I'm not lying to make it seem like we're angels, honestly; this kid is a genuinely nice person) gets the bartender's attention after repeatedly saying things like, "Excuse me..." and "Um... excuse me... bartender?" then "Hey! Bartender!" after a while. The barkeep comes up to my friend and he points out the flies to him. He asks the bartender, "Do you see the flies?" to which he replies, "Yep," and proceeds to walk away. Another less polite person in our group says, "What the fuck! Dude, we didn't pay for the flies, we paid for the drink!"
The bartender comes up to us, takes the drinks, pours them out, stacks the glasses, and walks away. The more polite of the two of my friends who did all of the talking says, "Well, can we at least get another round?" and the bartender doesn't even look up at us, 2 feet from him, and says, "Nope."
We all leave, except for the rude one of the two kids who did all of the talking. I don't know what he said, but I remember looking from the outside at him standing on his stool yelling at the bartender. Honestly, that douchebag deserved whatever my friend dished out at him. Wouldn't even pour us another round of drinks after there were insects in them! What the hell???
EDIT :: The bar was Murphy's Pub in Union Square, on Kearny Street. Also, to clarify things, we didn't pay for our drinks. Luckily this all happened before my friend dropped the cash for them.