1. Used to refer to someone who is stupid and also a dick.
2. Used to descibed a poorly thought-out choice made by someone who could also be called a stupdick.
3. Someone who is acting obnoxious/idiotic/annoying/stupid over a certain period of time.
1. "That guy is a major stupdick."
2. "Why would you play volleyball, Ben? That is such a stupdick idea."
3. "Quit being such a stupdick, Bryan. It's pissing me off!"