A person who uses Twitter way too much, think it's the best thing in the world and fills up your queue with crap. They tweet about what they're eating, when they take a shit, and other banal, boring and otherwise vapid drivel.
Jesus fucking Christy! I've gotten 20 tweets today from Bob about his shoes! What a Tweethole.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.