Here's a tip that's applicable both to corporate events and backyard pool parties: Do a quick Google search beforehand to make sure that nothing you're dumping into your pool has the potential to react and create a chemical warfare agent. If the party organizers had done this, they'd have realized what happens when pool chlorine and liquid nitrogen combine. The result is nitrogen trichloride, a toxic gas that will break up just about any party:
As you can see, nitrogen trichloride creates a horrific knock-out gas more effective at dispersing a crowd than anything the riot cops normally use to break up Jagermeister parties. People began hacking and coughing almost immediately, then passing out -- all together, eight people were hospitalized, and one guy even ended up in a coma (he wound up spending 18 days in the hospital). All of this while bangin' rave music blared in the background, because block-rockin' beats are the official soundtrack to any summer tragedy in the making.
At least four complaints were filed with the government, and Jagermeister was quick to issue a statement reminding everyone that they are normally all about promoting safe drinking activities.