Don't ask me WHY we thought it would be funny, but a bunch of the girls in the office (in a moment of complete boredom) decided to construct a willy out of a banana, 2 apples and a fake mustache, and place it on one of the guy's desks while he was out to lunch.
What followed for the next 15minutes was complete confusion as we argued over the anatomical correctness of the various willies we'd constructed.
Let's just say it took 4 girls, 4 attempts to get it "right".
Judge for yourself:
I hadn't laughed that hard in ages...