An online or cyberspace refrigerator. A grownup's version of the refrigerator from childhood that was adorned with his or her best artwork, test scores, report cards, etc.
You should have seen the glowing e-mail I got from my boss today about my work on the merger. I was so proud I immediately forwarded it to my parents for the e-frigerator.
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.