MEXICO CITY -- Inviting people to pucker up seems to be all the rage in Mexican cities.

The Mexico City government is urging people to converge on the huge Zocalo city center and simultaneously kiss on Valentine's Day. City tourism secretary Alejandro Rojas said the goal is to break the world record for the most people kissing at one time.

The announcement Thursday came two days after Guanajuato Mayor Eduardo Romero declared his colonial city in central Mexico the "kissing capital" of the world. Romero was trying to disprove claims that he had banned kissing through an anti-obscenity law.

According to the Guinness Book of World Records, the biggest mass kiss to date came on Sept. 1, 2007, when 6,980 couples smooched in Tuzla, Bosnia-Herzegovina.