Help needed at the M i L

I'm at the mother in laws and I can't think of any les Dawson jokes ,can you help .

 

i cant get over my m i l so ill have to go round

 

"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'.

 

excellent

 

Last night the local peeping Tom knocked on my mother-in-laws' door, and asked her to shut her blinds