At West Midlands Safari Park
They used to have (possibly still do have?) a ride which consisted of a large swinging pendulum with a disc on the bottom. The disc had seats around its rim all facing towards the middle and the disc would spin around as the pendulum see-sawed up and down.

The fanciful movement and sensations that this created were evidently too much for the gentleman sitting next to my girlfriend and he did great globs of Pedigree Chum-style sick over half the participants. Thankfully it was rotating so that the lumpy horsemeat splattered away from my girlfriend and I.

Highlight was probably the disgusted chav girls in their cheap bling trying to shake the sick off their clothes and hands as we got off.

---------------------------

This story's not much better so I'll put it here too. In the 1980's you still used to get animals in the circus, and as a young tyke I went along to one such circus. The ring was caged and had a number of tigers wandering about bored, waiting for the show to start.

Perhaps in solidarity with the chimps of Mary Chipperfield, or perhaps simply because tigers don't need to give a fuck, one of the stripey beasts proceeded to cock its tail and fire a steaming great cannon of piss all over the woman sat two seats down from my mum. It had quite a boisterous odour if memory serves, and no doubt the poor woman enjoyed the show all the more for sitting there covered in giant cat's piss for two hours.
(Eukanuba, Sat 4 Feb 2012, 18:18, 2 replies)

Ah, the smell of massive cat piss.
I Berlin Zoo, we saw a round pair of German ladies cooing over a lion, which lazily turned around and smayed them full in the face with a pint of the most heavily tangy piss. I've seen such a mixture of outage oand flabbergastedness.
( Colonel Boris "...a desperate Buzzfeed imitation...", Sun 5 Feb 2012, 2:24, closed)

A click for "boisterous odour"
One fo the finest examples of understatement I've seen in a while.
( shinyshinyscalp less a man, more a way of life, Mon 6 Feb 2012, 13:19, closed)