"Jumping jack" as pronounced by Mexican laborers who don't speak good English. A jumping jack is a hand operated piece of equipment that compacts soil at a construction site.
Boss said to use the yumping yack on dees dirt over here
The act of being popular and to cool. Doing drugs and never giving a fuck because you are so fucking popular you dont care.Only yumpers may go, or be yumping.
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.