You shall not take the name of the Lord your God in vain, for the Lord will not hold him guiltless who takes His name in vain.O.M.G. means "Oh My God" or "Oh My Gosh" a corruption of the same and if you are not using it in that meaning then you are in trouble with the Almighty. Unless you mean it.
Exodus 20:3 N.K.J.V.
Please be careful what you say.
If it is taken lightly It can be very damaging to your life. It can lose you friends make enemies or break up marriages or relationships. You may think I exaggerate, but let me explain.
If it is said at the alter to your bride to tell God how beautiful she is. It can make marriages last in lives of mutual respect and love.
Whereas, saying "O.M.G." or "Oh My God!" during sex with someone you hardly know is almost certainly idolatry. You are worshipping the sex not God. Worshipping anything other than God is idolatry. Idolatry, a separate sin, curses your children to third and fourth generation.
It is not only taking the Lord's name in vane and a form of Idolatry it is also fornication, which is also a sin but not one of the ten commandments.
The basis of any sound society is the family and families are based in marriage. Agreeing to love each other as long as you both shall live in front of God, friends and family the whole community.
Fornication is the antithesis of this. It is just sex for the pleasure of it. It leads to broken homes single mums who cannot be good mums and get food on the table and dads who do not care. A life where every one looks out for just number one and that is not God.
Be careful which side of the fence you are on. On God's side with your friends and family supporting your relationship is so much easier than fighting for a life on your own.