To annoy. To raise a contention when no one cares for your opinion. To be thought of as an idiot, then to share ones opinion and to remove any doubt. To be utterly ignorant of just stupid you really are in the eyes of others.
Your typical rock climbing, "not all who wander are lost", sub alpha male who's moderately pretentious & his diet consists of microbrews and charcuterie plates.
Person 1: "Damn I was trying to sleep but was woken up by some Car Douchebag"
Person 2: "Me too, he must've been driving aroundneighborhoods to fuck up everyone's sleep."