So common in Thailand, especially in the provinces: Dude, Close Your Legs!

A Scourge Is Spreading. M.T.A.’s Cure? Dude, Close Your Legs – NYT, December 20, 2014
…Taking on manspreading for the first time, the authority is set to unveil public service ads that encourage men to share a little less of themselves in the city’s ever-crowded subways cars.
The targets of the campaign, those men who spread their legs wide, into a sort of V-shaped slouch, effectively occupying two, sometimes even three, seats are not hard to find. Whether they will heed the new ads is another question…