COCA-Cola has been forced to can a TV ad that authorities say suggested women should be available for sex whenever men want it. The Advertising Standards Bureau found the ad, though light-hearted, was inappropriate to be on TV when children were watching. It was the second embarrassment in a month for the soft drink giant, after it had to admit incorrect health claims in print ads featuring actor Kerry Armstrong. The latest controversy erupted over a Coke Zero ad, titled "Break-up as it should be".