Sexual frustration scene!
If you listen VERY carfuly when David is kicking the bed, you will hear a snapping noise.
In fact during this filming scene, David broke his foot.
To read more about it go here:-
http://www.unromantic.digitalresolve.co.uk/info/index2.html
May I also take this opportunity in saying that I have known David Lumby for over 15 years & his friend John Evans for over 7 years.
I wish them & the rest of their team responsible for this movie, nothing but success on their future films.
Its a thoroughly enjoyable modern British film, easy worthy of a rental.
Good luck fellas
your old buddy,
Steve
PostScript:-
I think both Dave & John, each deserve a congratulatory beer from me. ..