Suckow said the ad hoc committee's approach would lead to lengthy litigation.

The DA has said the ad is set to flight on Tuesday.

Pepsi said the ad was created by its in-house shop, Creators League Studio.

Media reports said the ad would air later this month.

Experts who follow elections said the ad was unusual.

The union said the ad breached good faith.

The Food and Drug Administration said the ad, which appeared in a medical journal, was misleading.

Complainants said the ad was chauvinistic, but the ASA said it was likely to be considered lighthearted.

Mr Shorten said the ad was "offensive and hurtful to LGBTI Australians and their families".

He said the ad should be pulled.

It said the ad was socially irresponsible and was about the character having a poor body image.

No phone calls, said the ad.

UK advertising company Media Agency Group's account manager Rob Saunders said the ad was getting good publicity and numbers.

The ASA said the ad did not breach any UK rules relating to harm and offence or responsible advertising.

The ASA said the ad was unlikely to cause "serious and widespread offence" and was socially responsible.

Burger King, owned by Restaurant Brands International Inc. QSR.N, said the ad is not in collaboration with Google GOOG.O.