Mr Bean and Blackadder star Rowan Atkinson, 63, has defended the ex-Foreign Secretary as he faces an investigation for his controversial comments.
Ex-Mayor of London Boris, 54, said in his Daily Telegraph column Muslim women who wear a burka "look like letterboxes", comparing them to "bank robbers".
The burka covers a woman's entire body and face, leaving just the eyes visible.
Boris was referring to plans to introduce a burka ban in Denmark when he made the remarks — which have sparked anger in some quarters.
But Atkinson, in a letter to The Times, said the MP for Uxbridge and South Ruislip had just been telling a joke.
He wrote: "As a lifelong beneficiary of the freedom to make jokes about religion, I do think that Boris Johnson's joke about wearers of the burka resembling letterboxes is a pretty good one."
And he added: "All jokes about religion cause offence, so it's pointless apologising for them.
"You should really only apologise for a bad joke. On that basis, no apology is required."
JOKE, ACTUALLY: Rowan Atkinson, right, has jumped to Boris Johnson's defence
ANGER: Protests against Boris Johnson over his comments on the burka
UNDER-FIRE: Boris Johnson is under investigation for his article in the Daily Telegraph
FAMOUS: Rowan Atkinson has made a fortune as Mr Bean
HILARIOUS: Atkinson, left, shot to fame in the 1980s sitcom Blackadder
“Boris Johnson's joke about wearers of the burka resembling letterboxes is a pretty good one”
While fellow Tory MPs have called on Johnson to apologise.
Rowan Atkinson shot to household fame in the 1980s in the beloved sitcom Blackadder — where he played the same character in different periods of history.
He is world famous for playing the bumbling fool Mr Bean.
Daily Star Online reported recently how a fake post claiming Rowan Atkinson is dead was spreading a computer virus to thousands of Brits.