Take a snippet of computerprogramming code written by your friend, rewrite it, make it elegant, then add it to your own program. Then you call your friend and tell him his code has been comangulated into something great.
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.