If you're in a routine at work and a client messes that routine up...
and most men do the respectable thing and allow the lady to go first.... so therefore you, just like them - messed up my routine with clients ....or my clientation.
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.