Who flung poo?

[snopes]

Comment: Hi

One urban legend, although far from new, that I've never been able to find
on the site, I've tried to describe below. I've heard it off various
people here in the UK (always the classic friend of a friend, or this guy
my mate knows) and it also made its way into FHM's true stories (though
much later than all the other times I'd heard it). It goes something like
this:

- Boy gets invited to girls house to meet parents
- Whilst waiting for dinner needs to use the loo for a "number 2" and
decided to use upstairs toilet
- Disaster strikes! the flush doesnt work after he's been
- He doesn't want the embarrasment of the girl's family knowing (strange:
he could just wash hands and take girl to one side to work out how to
sort) so SCOOPS UP THE POO AND CHUCKS OUT THE WINDOW (this is where my
bs-ometer kicks in)
- Cleans up and goes back downstairs
- Family all looking at him funny
- He says "What's wrong?"
- Girlfriend points to roof of the conservatory they are sitting in. He
looks and see's offending excretion staring back down at him

Clearly a funny story, but can't imagine him not checking where he was
throwing it. Would imagine that this scene has been in a comedy film or
something and that's where it came from.