Why exactly is this lady a b!tch???? Because she has rules in her establishment - her private property? Because she asked you to do something, and against the advice of your friends- you mocked her and gave her a hard time, and then she asked you to leave?
The night wasn't about you, you weren't supposed to be the center of attention, it was your bro-in-law's night out, but you couldn't just go with the flow????
NO SHOES
NO SHIRT
NO DICE
