My apologies, I remembered incorrectly, but I did find a relevant clip about the bronze bull from
1000 Ways to Die**. Granted it's not the most reliable source, but it does offer a lot more insight and on the subject than 1 room from Amnesia containing a brief description. Suffocation due to the hot air seems to be the major cause of death, but the liquid in the human also boils. Yummy.
Link*:
http://www.spike.com/video-clips/90mvnn/...rass-bulls
* = I'm not sure what the rules are about posting links to other sites (if any such rule exists at all) but if I'm in violation of such a rule I'll take it down ASAP.
** = Link contains content of a graphic nature, viewer discretion is advised.
I rate it 3 memes.