The incident occurred (I'm sure Nick won't mind me relating it to save him the trouble) when Mr & Mrs Nick were in their younger years and had decided to go for a drink at a local hostelry. The landlord happened to be in possession of a grey parrot and by all accounts it was habitually free from its cage. Nick described it as a particularly
fooking vicious parrot, specially in the beak department.
Apparently the parrot decided to perch on Nick who was sporting a fine suit at the time and, either being an animal lover or scared to retaliate, he let it roam upon his person. The parrot started his adventure by nipping off the buttons of his suit jacket one by one and, having none left started to explore the trouser area...
One can only imagine what happened next as the parrot found a feast of smaller buttons to get its beak around