Big demand for Mrs Brown shoot
Mrs Brown's Boys creator Brendan O'Carroll has said nearly 40,000 fans applied for the 400 tickets available to see the live episode.
In a one-off special entitled Mrs Brown's Boys Live: Mammy Sutra, it will be broadcast live on BBC One for the first time ever tonight.
O'Carroll said: "We've got 400 seats and there were 37,000 applications for tickets. We're very lucky - it will be great fun."
Asked to account for the show's popularity, O'Carroll, who plays the lead role of Agnes, said: "Everybody knows an Agnes or somebody like Agnes. It's either an aunt or a granny or a mother and everybody knows one.
"There's a warmth about her. There's something about her, she actually adores her children and I think that's her redeeming factor," he said.
In the live episode, Agnes discovers son Mark Brown (Pat 'Pepsi' Shields) and his wife Betty (Amanda Woods) are experiencing problems in the bedroom.
She takes it upon herself to fix the situation.
The show is renowned for its profanity, but Mrs Brown's Boys Live: Mammy Sutra will be broadcast without a delay so any swear words will slip through the net.
Mrs Brown's Boys has become one of the biggest comedy shows on television. Ratings for some episodes have reached as high as 12 million viewers.