THE advertising watchdog is investigating a poster promoting Scottish comedian Fern Brady’s latest tour following a complaint it “mocks the Christian faith”.

Promotional materials see the comic squirting breast milk onto a man dressed in religious ceremonial clothing.

On the poster she is standing by a stained-glass window which says “I gave you milk to drink”, which is the name of her latest comedy tour.

(Image: Fern Brady) The comedian – originally from East Lothian – acknowledged the complaint in a post on Instagram, writing: “Whoever complained about the poster, thanks a lot.”

She added: “For this show, tickets were selling well and it was all looking good. Then some virgin complained to the ASA about my beautiful tour poster. There’s not even anything wrong with it, why are you complaining?”

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The Advertising Standards Authority (ASA) confirmed it has received a complaint about the paid-for online ad.

An ASA spokesperson said: “The complainant has challenged whether the ad is offensive because they believe it mocks the Christian faith.

“We have launched a formal investigation. But no decision has been reached on whether the ad breaks the UK advertising rules.”

The watchdog has said it will publish its findings in due course.

Brady (above) rose to fame as a comic after shows such as the Edinburgh Fringe Festival and has appeared on comedy panel shows such as 8 Out of 10 Cats and Taskmaster.

She has previously spoken about how receiving a late autism diagnosis in 2021 impacted her life.

Brady has been contacted for comment.