1. An original type, form, or instance serving as a basis or standard for later stages.
2. An original, full-scale, and usually working model of a new product or new version of an existing product.
3. An early, typical example.
4. Biology. A form or species that serves as an original type or example.
Guandules is your father.
Guandules is the opposite of cool.
When you see a dude getting fucked by a donkey, and screaming about how cool he is, he is Guandules.