Cud stretched, forming a vacuum in the gullet that sucks the semi-liquid stomach content into the esophagus. From the esophagus it is taken back to the mouth with retro peristaltic movements. When the stomach content, or the cud, arrives in the mouth of the ruminant, it is pushed against the palate with the tongue to remove excess liquid, the latter is swallowed and the solid material is chewed thoroughly so the cattle can extract the minerals present in the cud brought to the surface during rumination. The function of rumination is that food is physically refined to expose more surface area
Chewing gum ban in Singapore import of chewing gum was immediately halted. After a transition period allowing shops to clear existing stock, the sale of chewing gum was completely banned. When first introduced, the ban caused much controversy and some open defiance. Some people took the trouble of travelling to neighbouring Johor Bahru, Malaysia, to purchase chewing gum. Offenders were publicly "named and shamed" by the government, to serve as a deterrent to other would-be smugglers. No black market for chewing gum in Singapore ever emerged, though some Singaporeans occasionally still manage to smuggle some chewing gum from Johor Bahru for their own consumption. The