Earliest historians figure that TJ means:
The exact meaning of TJ is not known except that it was the name of the ancient greek god of "Always listening to his iPod and occasionally zapping mortals with his unbearably good looks".
A "TJ" sort of person usually has ridiculously good hair and a natural ability to air guitar.
A "Not-TJ" sort of person usually finds themselves walking into walls and taking long stoner drives before realizing their car isn't moving whatsoever and is still parked in the driveway.
To "Pull a TJ" means to perform a feat of unsurpassable awesomeness.
Chuck Norris - "Did you see what I just did?"
Mortal - "Are you talking to me?"
Chuck Norris - "I was surrounded by 200 killer robots with death rays and I managed to pull a TJ"
Mortal - "... please don't kill me."
Chuck Norris - "I guess I won't have to deal with those robots anymore.