A saying off the phenomena that George Lucas simply cannot keep his hands off his own original trilogy of movies. He has updated them with 4 separate incarnations of CG graphics over a 15 year span. This has created a frankenstonian mess of old film footage with high resolution graphic composites on top. Therefore, the term 'Pulling a Lucas' just means that you cannot stop yourself from updating your own successfully completed works and projects. It's the modern, 'if it ain't broke don't fix it'.
Dude, why did you update that film (paper, render, car, suit, etc.) you created, it was already perfect!? You pulling a Lucas bro!
1. Taking a typically eventful situation and making it void of all fun and merriment by sheer presence of a particular "boring" individual.
2. Not touching a woman for fear of disrespecting her, a very "boring" act.
3. Letting everybody down
Bro: Dude, Glissy is here, shit just got boring
Brah: Dude, I know, he is pulling a major lucas
Bro: I am going to "kiss that girl on the mouth" but will do nothing more because I respect her for her intelligence and well conditioned hair
Brah: You are totally pulling a lucas, fuck her is the ass then slit her throat Bro
Bro: Hey Guys! I brought meat for vine day
Brahs: You are pulling a lucas, you forgot to bring brats and bruansweiger!