Modern comedians are shunning the tried-and-tested pop at the wive's mothers for more relevant material in a bid to keep their audiences rolling in the aisles.
They claim audiences are bored with mother-in-law jokes and believe they have become outdated - even though Dawson once famously said: ''The wife's Mother said, "When you're dead, I'll dance in your grave." I said: "Good, I'm being buried at sea."
Now a men's wedding website dedicated to helping grooms, best men and fathers-of-the-bride cope with the pressures of the big day, have comissioned a new horde of rib-tickling jokes to keep us entertained.
TOP FIVE NEW MOTHER-IN-LAW JOKES
1) "We were having tea with my mother-in-law the other day and out of the blue she said, "I've decided I want to be cremated." I said, "Alright, get your coat." Dave Spikey.
2) "We got a new car for the mother-in-law - that Government scrappage scheme is great!" Marc Whiteley.
3) "Getting my mother-in-law to accept a free foreign holiday was easy. The hard part was convincing her Dignitas was Swiss for spa." Sean Lindsay.
4) "My mother-in-law was so mean she blinded herself just to get a free dog." Gary Delaney.
5) "STEVE: My Mother-in-law went to the Caribbean. FRED: Jamaica? STEVE: Well I hope so, it's hurricane season and she's a horrible person." Stephen Holford.
TOP FIVE CLASSIC MOTHER-IN-LAW JOKES
1) Les Dawson: "I can always tell when the mother-in-law's coming to stay... the mice throw themselves on the traps."
2) Ken Dodd: "I haven't spoken to my mother-in-law for eighteen months. I don't like to interrupt her."
3) Bob Monkhouse: "My wife said: 'Can my mother come down for the weekend?' So I said: 'Why?' and she said: 'Well, she's been up on the roof two weeks already'."
4) Les Dawson: "I took my mother-in-law to Madame Tussaud's Chamber of Horrors and one of the attendants said: 'Keep her moving sir, we're stock-taking.'"
5) Henry Youngman: "I just got back from a pleasure trip. I took my mother-in-law to the airport."