Thinkings

 I was looking at the crossword-clues but-I-didn't have me glasses and with blurry-eyes read "Bum hole" so,it made me think of arses... Anus wouldn't fit at all and ass'ole seemed too crude so-I-thought I'd better find me specs or the answer would elude.... So with vision now in focus via-specs a little later the-clue-in-fact was "Bomb hole" and-that's a s##t hole of a crater......