an expression of extreme dislike or anger when used in the imperitive, ie go fuck yourself

1. (slang) To have some sort of accident
2. Literally to eat some sort of feces

the act of putting a bit or chunk of feces in one's mouth, and then swallowing.

To have an accident resulting in contact with the ground at speed, while riding a human-powered vehicle such as a bicycle or skateboard.

To take a bad fall, similar to the terms "eat snow" in snow skiing and "eat dirt" in biking. Eat shit can conveniently be used to describe a fall on any kind of terrain, including gravel, concrete, snow, ice, water, or anything you can think of. It is a commonly used term in waterskiing.

when your doing something extreme, like mountain biking, water tubing, etc., and you take a massive wipeout

The perpetual process of doing nothing productive. Considered a life style by some, it involves procrastinating, smoking weed all the time and generally wasting unused potential.