I know how that goes.
"the basket looks rikety? Well lets put the several hundred pound Ogre carrying two prisoners in it with two other party members at the same time!"
"we should check for traps? naw, those never do anything we can't fix!" (the serpia snake siguls proved otherwise)
I can't help but "reward" players after they do this, and by "reward" I mean "curse". I figured that the long stay of the demon in the lake was due to a gate spell. I also assumed that the water in the lake was less than "fresh". thus an hour after their little swim they discovered they were infested with Gut Worm Symbionts from the fiend folio. The little halfling Wu Jen tried to beat one of the Hillfolk to death with his spellbook after the worm made him involuntarily Rage. It was great...