b. A shady character.
c. Someone that appears to have no moral judgment, self-respect, or general hygiene to the point where he/she is a total laughingstock that must be avoided.
She dumped him and went out with two other guys on the same day? Holy sketchball, batman!
Believed to have originated from the 2005 motion picture Brokeback Mountain.
"I don't know man, it looks kinda brokeback to me." -Boondocks
The phrase originates from the movie "Billy Madison" when Adam Sandler's character makes an ass of himself while trying to fit in in high school...
Guy: "No I won't make out with you!"
Originates from Billboard Magazine's practice of putting a bullet sign in front of chart entries that have moved from one position to another with notable speed.