Braindead

When you sneak into a room with a giant monster The barbarian wants to go head to head The cleric rolls his eyes. The wizard cries "you must be brain-dead" Brain-Dead Brain-Dead What has a break and tenticles And it hovers above your head Sneak attack, fireball! "now you're brain dead" It's got no beak or tentacles Did you hear a word I said? Can't you tell, it's not a grell? "you must be brain dead" Down in the caves of the underdark Where only brave folk tread Gigantic, psionic, malicious brain "you must be brain dead" Split up the crew Drink all the booze Ignore all the clues Fight everything that moves