Cupboard
Rosie Hall buys a self-assembly, flat-pack, cupboard from her local Homebase store. Reaching home Rosie reads the instructions carefully, counts the pieces then assembles the cupboard in the bedroom. It looks really great and she is delighted.
Now, Rosie lives near a railway line and as the train passes by the cupboard collapses. Undaunted by this misfortune she re-reads the instructions and reassembles the cupboard. Once more, another train passes and the whole cupboard collapses again.
Rosie now frustrated and thinking that she must have done something "wrong" re-re-reads the instructions and re-re-assembles the cupboard. Shortly, a train passes and the whole cupboard collapses yet again for the 3rd time.
Rosie is now fed up, cross and rather angry so she phones the customer service department. She is told that this is quite impossible and that they'll send along a fitter to take a look.
The fitter arrives and assembles the cupboard. Again, a train passes and the cupboard collapses. Completely baffled by this unexpected event, the fitter decides to reassemble the cupboard and sit inside it to see whether he can find out what causes the cupboard to collapse. At this point, Rosie's husband comes home, sees the cupboard and says, 'Oh, that's a splendid looking cupboard,' and he opens it to look inside.
The fitter, who had been wondering how to explain his position in Rosie's bedroom cupboard, blurts out, 'You probably won't believe me, but I'm standing here waiting for a train.'