Real = True, exact, no fault, no fake, thrust worthy, clear, absolute etc.

Deal = contact, transaction, barter, exchange etc.

Real Deal = what you are getting is excellent in the above ways

That girl you just can't quite let go of. Don't.

The king-ding-ling big dog. Home of the 9+ whopper and every ladies wet dream

The act of consensual anal penetration with Julian's sister.

Another name for heroin.

gay term used by the drugged out ghetto white kid who lives in my circle instead of fo shizzle

Often imitated by countless fraudsters, the term "The REAL deal" has long been associated to just one soul that being MPG Betts.
One key difference if one wishes to ascertain if they are in the presence of "the REAL deal" is that you will find The REAL deal is ALWAYS about the place.