I would have scored with that girl if that Chad would have just shut his piehole.
A chad is somewhat easy to sight, as they're everywhere, but the only way to know for sure is to talk to/observe one. They typically dress in a similar manner to a "bro", though are not in fact bros. They either wear the latest fashionable clothing from big brands, or highly expensive graphic tees, most likely of the MMA (Mixed martial arts) variety. They most likely sport a tribal tattoo, or something of the like. They most commonly drive V6 Mustangs, S10 pickup trucks, or crotch rockets.
Chads can be found in large numbers at Frat houses, local hipster bars, and nu metal concerts (which are obviously real metal shows...). They often travel in groups of a few, but can be found in swarms at these establishments. Other than being cocky and talking shit, other popular pastimes of chads include, but are not limited to: beer pong, racing hondas, UFC, and blasting nu metal on their stereo because they think it makes them look like a badass.
Again, not to be confused with the bro, who may or may not share some of these characteristics, but is actually cool, and therefore, is ok to hang around with.
Dude 2: It's $1 Bud Light Night. Don't you know? They only like light beer.
Dude 1: Meh, screw this. Let's go somewhere else and grab a pitcher of Newcastle.
verb. continually dropping the ball. pissing everyone off. screwing up really bad.
verb. "you chaded yourself pretty hard" "he wouldn't stop chading at the party" "he pulled a huge chad"