Cleanliness Is Next to Godliness

Now when I was younger, and in fact now, when I come to think on it  ... 'Carry on Up the Khyber', or indeed any mention of 'The Khyber Pass', had double entendre connotations. So when film or book character said that he or someone 'copped it up the Khyber', I would, and still do, grin.

Carry On Up The Khyber ... Good For A Laugh