Police are looking into an incident at Karen’s Diner during which a waiter put a “grotesque” message on a paper chef’s hat for a nine-year-old child which read “I should have been a bl*w j*b”.

Ashley Lambert, her husband and her daughter visited the restaurant, which promises “rude service and great burgers” in Brighton Marina on Saturday last week.

Ashley said that what started as a bit of fun turned into something “far more sinister”. Now, Sussex Police have confirmed their licensing team is looking into the incident.

READ MORE: Mum in tears after Karen's waiter says child 'should have been a blow job'

Ashley, 39, from East Grinstead, said she carefully read the website before making a booking.

It said: “Because of offensive and inappropriate language, under 14s must be accompanied by an adult during the lunchtime service and they recommend under 18s to attend before 5pm.”

Ashley and her family went for lunch which began with “rude behaviour that was genuinely funny,” she said, until the waiter placed the rude hat onto her daughter despite being previously told that she was nine.

She then asked her if she knew what a bl*w j*b was.

“This is when I completely disassociated from my body," Ashley said. "When my daughter replied 'no' the waiter walked to the other side of the restaurant and got on a mic. She introduced my daughter by her name and age and proceeded to "educate" her publicly on an explicit oral sex act all while using myself and my husband as verbal examples.

“She then told her if she wanted to know more, she could watch porn and for her to tell her friends at school that she knows what a bl*w j*b is. It was beyond disgusting.”

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A spokesman for Sussex Police has now said: “Our licensing team has a responsibility to ensure premises are adhering to their licensing conditions and to ensure the public are safeguarded from any harm.  

“The licensing team are reviewing the footage to identify whether there has been a breach of the premises licence conditions, and to establish if there are any learning outcomes such as further staff and vulnerability training.”

In an email to Ashley, Paul Levin, a spokesman for Karen’s Diner, said: “I forward my apologies for this unacceptable incident.

“All staff need to read and sign our operations handbook prior to commencing work.

“Further we insist that each and every Karen is trained to perform in accordance with the manual's guidance.

“The venue will not continue to offer employment to the member of staff responsible for this serious breach of good conduct.”

Ashley and her family received a refund for their food.