Les Dennis made a cheeky joke about his ex-wife Amanda Holden's affair.
The former couple were married for eight years from 1995 to 2003 but in 2000 Amanda, 50, cheated on him with Men Behaving Badly actor Neil Morrissey, 59, in 2000.
They rekindled their relationship the following year, but ended their marriage two years later.
Speaking on Christopher Biggins' podcast, Les, 67, spoke about starring in pantomimes with American actor Mickey Rooney, and he said that before each performance they would play Christmas songs, including Frank Sinatra's version of Have Yourself A Merry Little Christmas.
Les said: "Mickey would get very angry, because of course, Frank Sinatra ran off with Ava Gardner, Mickey's wife.
"It would've been like me having to listen to Bob The Builder every night."
Neil was famously the voice of cartoon character Bob The Builder, a role he played for 14 years.
Amanda and Neil embarked on an affair while starring in Happy Birthday Shakespeare on The BBC.
The Britain's Got Talent star has been open about the affair she had with Neil during her marriage with Les.
"I don't believe women have affairs for no reason," she told Good Housekeeping in 2013.
"Neil rightly or wrongly got loads of stick. I feel like it was my fault - I was the one who was married.
"I want to change the general perception of him, as he was very caring and very loving and very worried about me because I lost so much weight. He used to cook for me and look after me and babysit the dogs."
The following year, Neil revealed that he had never apologised to Les for the affair.
Speaking on Piers Morgan's Life Stories, Neil revealed: "I feel sorry for how the situation was dealt with and I feel sorry for how emotional Les seemed to become.
"It was very difficult for him and for that I'm very sorry."
Piers asked him if he'd ever said sorry, to which he replied: "No, I didn't. I'm not positive over what there is apologise about.
"I don't know what the whole situation was, to be perfectly fair to everybody."
He was also asked why he'd never spoken about it until then, and Neil responded: "I think enough was said about it. This was a very short fling.
"I didn't have representation at the time, in terms of PR and this was the first time I'd really come under the cosh."
Amanda went on to marry record producer Chris Hughes, with whom she has two daughters: Lexie, 15, and Hollie, nine.
Meanwhile, Les married Claire Nicholson in 2009 and they share two children: Eleanor, 13, and 10-year-old Thomas.
