Sense of to exist, be present is attested from c.1300. Meaning to pay for as a treat is from 1821. Phrase stands to reason (1620) is from earlier stands (is constant) with reason. Phrase stand pat is originally from poker (1882); stand down in.
In Expert Mode, Wall of Flesh is seen to be significantly faster than his prior speed, posing map navigating harder as the players are demanded to plan out their routes fasters. In addition, getting pulled by his tongue will inflict additional damage to the player, possibly killing a weakened player.
The Wall Of Flesh will come from East or West depending on where you throw the Voodoo Doll, If you throw it from the left of the center of the world, it will come from the west, and go towards the east, if you throw it to the right from the center of the world, it will come from east and go towards west.