From Batman: Under the Red Hood
I hope you understand the trouble I've gone through to arrange this little get together, a lot of money, a lot of dead meat,I've got a problem and you are absolutely the man who possesses the gifts to take care of that problem, I need you to murder the Red Hood, you think you can handle that?
[Joker is eating a packet of chips and coughs
] May I have some water?
[One of Black Mask's agents gets him a glass of water, Joker breaks it over the end of the table and shoves it in the agent's throat, takes his gun and shoots the other agents, Black Mask stares down the barrel of the gun as Joker laughs maniacally