Freeze branding I

I think I've just done something pretty darn silly. I was reading up about freeze branding last night (I really need to get my late-night surfing habit under control). The first time I read about it was in the National Geographic in the context of branding dolphins - obviously putting a third degree burn into an aquatic animal is a poor way of marking it. Apparently it's a pretty straightforward process - cool metal implements in liquid nitrogen or alcohol + dry ice until the coolant stops boiling, press into skin (20s for horses and cows, 8s for dogs). It's also supposedly painless - calves that were branded while nursing just went on sucking on mama cow's teats through the process.

Well, we have a canister of LN₂ in lab, but I certainly don't want to potentially mess up our frozen cultures and viruses...but when we got a shipment of reagents in dry ice just now the temptation was too great. I now have a loop-shaped red mark on my inner left elbow surrounded by a white and red halo. Photo and details later.

Yeah, I'm crazy.