v. When a girl moves her face away from an ejaculating penis to avoid cum from hitting her in the eyes, nose or mouth, getting it in the neck or hair instead.
Daisy hates her face being turned into glazed doughnut, so she's become an expert in cumducking.
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.