Going back a bit but in terms of tongue-biting moments, I was in the Zoofari monorail at Chester once, just pulling out of the Monkey Islands station.
I was on my own but there was an older lady with (what I took to be) her grandson alongside that had been put in the same car. As we pulled out of the station, the following conversation took place:
GRAN: Now, let's see how many animals we can spot. Let me know if you see any.
CHILD: There! There! A pelican!
GRAN: No, that's a
bird, we're looking for
animals.
Followed by the sound of my teeth grinding...
