Mom Wisdom.

Logic - "Because I said so! Thats why!"
Farm-Life  -  "Your room looks like a Pig Pen!"
Envy  -  "There are million's of less fortunate children in this world who would LOVE to have broccoli for dinner  like you do!"
Anticipation  -  "Just you wait till your father gets home!"
Value of Education  -  "If you don't do well in school, you'll end up living under a bridge!"
Medical Science  -  "If you keep making that face, it will stick like that!"
Time Travel  -  "I'm going to knock you into the middle of next week!"
Foresight  -  "Wear clean underwear, what if you're in an accident?"
Hypocricy  -  "If I told you once, I've told you a million times..."
To Think Ahead  -  "If you don't pass your spelling test, you'll never get a good job!"
Receiving  -  "You are going to get it when you get home!"
Wisdom  -  "When you are my age, you'll understand."
Ophthalmology  -  "If you sit that close to the TV you'll go blind!"
More Logic  -  "If you fall out of that tree and break your neck, you're not going to the store with me."
ESP -  "Put your mittens on! I know when your cold!"
Take On a Challenge  -  "What were you thinking? Answer me when I talk to you! Don't talk back to me!"
Sex  -  “How do you think you got here?”
Adulthood  -  "If you don't eat your vegetables, you'll never grow up."
Appreciate a Job Well-Done  -  "If you're going to kill each other, do it outside - I just cleaned!"
Humor  -  "When that lawn mower cuts off your feet, don't come running to me!"
Osmosis  -  "Shut your mouth and eat your supper!"
Religion  -  "You better pray that will come out of the carpet!"
Weather  -  "Look at this room!! It looks like a Tornado went through here!"
Irony  -  "Keep crying, and I'll give you something to cry about!"
Roots  -  "Shut the Door!! Do you think you were born in a barn?"
Contortionism  -  "Will you look at that dirt behind your ears!"
Behavior Modification  -  "Stop acting like your father!"
JUSTICE  -  "One day you'll have kids, and I hope they turn out just like you!"


I didn't come up with all of these on my own, several are widely spread online, so I don't know where they originated.