Bum truth

For a year he has not spoken a single lie
But when it comes to the wife’s bum
He could neither speak the “big” lie
Nor keep mum: one does not know why.

A Swansea man is about to complete a year without telling a lie – but admits he came unstuck when his wife asked: “Does my bum look big in this?”
http://www.ananova.com/news/story/sm_3185840.html?menu=news.quirkies