Though it may look like this scientist is actually drinking the liquid nitrogen, he says that with a bit of practice, "it is easy not to swallow liquid nitrogen and make cool condensed vapor come out of the nostrils."
I would have drank it. I would have drank it and asked for another one. Bartender, another cold one. No, another REAAALLY cold one. You catch my drift? I'm talking about liquid nitrogen. And I want two of those little umbrellas and a plastic cutlass with cherries AND YOU BETTER NOT CHARGE ME FOR THEM. Now, get ready to call the paramedics.
How Scientists Chill Out [techeblog]
Thanks to naas, who once drank liquid gasoline trying to siphon my gas tank. That's what you get!