Anti-gay marriage proponents in Australia mailed pamphlets to residents that promote homophobia using a seatbelt analogy. This campaign follows in a tradition of last-belch efforts aimed at influencing citizens to vote against marriage equality laws in a postal survey this month.

The pamphlet features two illustrations. The first has three sets of seat belts, two of which have been color-coded in rainbow print — one to indicate a couple of two men and the other of two women. A third seatbelt, a heteronormative couple, is blue.

The blue belt has two different sides and is able to click properly into place, while the queer-marked belts are of the same sides and are incapable of interlocking.

“A ‘No’ vote is a yes to REAL marriage,” reads the flyer. “Only one of these is a REAL seatbelt.”

On the opposite flap, there is an illustration of three stick figure couples standing side-by-side. One couple is male-female, one is male-male and the last is female-female. In this they all are holding hands.

“Only one of these is a REAL marriage,” the pamphlet assumed. “It’s biology not bigotry.”

LGBTQ Nation reported the illustrations were based on a pro-marriage equality ad campaign from the Royal Dutch Airlines, released on Saturday in tribute to Amsterdam Pride — but completely flipped the original intention into a homophobic form.

Alex Bollinger of LGBTQ Nation posited that the campaign’s angle skews apart from tepid arguments over family values, morals, and religious principles; that it inclines instead toward the notion of homophobia as a political position:

“Since there is no logical argument against marriage equality, the ‘no’ campaign is trying to make homophobia seem like a reasonable political position instead of something shameful,” he wrote.