Fred and Jim are having a quiet beer one night when Fred announces that he’s going to divorce his wife.
“Good grief” says Jim, “You and Sue are the happiest couple I know – why on earth would you want to divorce such a lovely woman after all these years of obvious bliss?”
“Well” replies Fred, “Truth be known I’m just bored with pokin’ the same hole night after night after night. I guess I’m hankerin’ for a bit of variety.”
Jim: “Well if you want variety, why don’t you just, you know, turn her over every now and again?”
Fred: “What – and have a house full of kids???”