Karma basically means that whatever you send out is going to return to you in one way or another, equally good or equally bad - depending on what you choose to do. I t has its origin in the bible. It is a renaming of the principle God set forth that whatever a man reaps that shall he also sew. It is as definite and real as the principle of gravity.
You laugh at someone else's pain or you treat someone wrongfully and later on in life it comes around back onto you but much harder. Listen to Alicia Keyes' song "Karma" and Justin Timberlake's "What Goes Around Comes Around",they both explain it.
A lot of people that I knew suffered it for the best.
"for every event that occurs, there will follow another event whose existence was caused by the first, and this second event will be pleasant or unpleasant according as its cause was skillful or unskillful.'
Do wrong, and wrong will fall upon you. Do good, and good will fall upon you.
karma is like when you do something bad, something bad will happen to you, but when you're good, your life is simple and easy. :)
karma didnt believe in it till it came back on me twice as hard dont do any thing you dont want dun to u ..
In a single sentence Karma is...'What you reap is what you sow'