An ad campaign for a Calgary condo development has been taken down after it was called sexist. (Wil Knoll)

An ad campaign for a Calgary condo project has been withdrawn after it was denounced as sexist.

The posters for the Midtown tower, under construction on 10th Avenue and Fourth Street S.W., featured the slogan: "A $20,000 down payment is as easy as a 25-year-old scotch, or a 25-year-old blonde on a 25-year-old scotch. Get on it."

Another read: "A $20,000 down payment is easier than scoring on a four-minute 5 on 3. And way, way easier than scoring with your waitress."

The posters were placed in men's washrooms at several nightclubs, including Sumo Lounge Restaurant on 10th Avenue S.W. and the Ironwood Bar and Grill on Ninth Avenue S.E.

The four-week-old campaign was designed to appeal to young professional men in the downtown area, according to the condo's builder, Point of View Developments. But it misfired for Wil Knoll, a Calgary actor who saw the ad at one of the bars.

"I probably wouldn't want to end up in a building with people who thought it was a fantastic ad," said Knoll.

He took pictures and posted them on the internet and Twitter, getting hundreds of responses, with most sharing his assessment that the ads were offensive.

'It's just that this one was so blatant, so tasteless'—Wil Knoll

"It's just that this one was so blatant, so tasteless," he said. "That stopped being funny to me before I was even 25 years old."

The subsequent online uproar has prompted the condo developer to withdraw the ads and apologize.

"It wasn't our intention to offend anybody," Clark Hogan, marketing manager for Point of View Developments, said Wednesday. "We took it as tongue-in-cheek. We were trying to address a target audience. But obviously we've offended 25-year-olds."

The company that designed the ads also issued an apology. "As creators of the Midtown condo campaign, Watermark Advertising apologizes unreservedly for any offence these washroom ads may have caused," it read.

"Obviously our idea of fun isn't funny to the audience we are attempting to engage — which immediately makes the communication wrong, so of course just as immediately, they will be removed."