An item that many people need to slow the random stuff that comes spilling out of their mouth, giving them time to consider if it really should be said at all.
Joe's lack of a verbal speed bump has cost him many friends.
A derogatory term for a man or woman who is well liked by their teacher, usually the favorite student of the class; this is generally shown by the student and teacher fist bumping.
Person 1: Mr. Teacher really likes me!
Person 2: Shut up Mr. Fist Bump, no one likes you
To snort a small amount of cocaine from the creases of your knuckle. Usually the most discreet way to snort in public (club, party, street) so that no one will suspect anything.