Because I'm a nerd, from the NCAA rulebook for this year -
Flagrant 1 personal foul. A flagrant 1 personal foul is a personal foul that is deemed excessive in nature (unwarranted or too much) and/or unnecessary (avoidable, uncalled for or not required by the circumstances of the play), but is not based solely on the severity of the act. Examples include, but are not limited to:
a) Causing excessive or unnecessary contact with an opponent;
b) Contact with an opponent that is not a legitimate attempt to play the ball or player;
c) Pushing or holding a player from behind to prevent a score. Depending on the severity of the contact and the potential for injury, this type of foul could rise to the level of a flagrant 2 foul;
d) Fouling a player clearly away from the ball who is not directly involved with the play, specifically designed to stop or keep the clock from starting;
e) Contact with a player making a throw-in;
f) Illegal contact caused by swinging of an elbow that is deemed excessive or unnecessary but does not rise to the level of a flagrant 2 personal foul (See Rule 4-18.7);
g) Illegal contact caused by a player hooking an opponent over or under the arm and which may lead the official to believe the contact was caused by the opponent. Depending on the nature of the contact, or the result of the contact, this foul could be considered a flagrant 2
foul; and
h) Contact with an opponent that is not the result of a normal basketball play. “Normal basketball play” is defined as any activity by a player, including incidental contact, which is generally accepted as that which occurs in a basketball game when the player is attempting
to make a legal offensive or defensive play.