LATAM Airlines Group, Bareback in Brazil Tomorrow

This outdoor ad has a mystery behind it -- after appearing throughout San Francisco on bus stops, the gay press called to inquire about the seemingly suggestive headline (despite showing a woman riding a horse). LAN denied approving the ad.

Megan Haney, a spokesperson for LAN, told SFist: "The advertisements were published without our approval and the point of view, choice of wording and use of the LAN Airlines logo was done without our consent. We have asked that the advertisements be removed immediately."

LAN was offical airline of San Francisco Pride in 2010.