It's irresponsible for bartenders to serve people too much alcohol.
Vic is a bartender and one of his regular customers has already had 10 shots of vodka, yet wants more.
Vic wants his customer to be safe.
Vic tells the customer that he's had enough and that he can talk to security if he has a problem with that.
Vic tells the customer that he can have more if he gets a designated driver, then gives him all he wants.
The customer is angry, but goes to sit down and passes out shortly afterwards, avoiding a fight.
The customer has a blood alcohol level of .45 and has to be taken to the hospital.