Things You May Not About Goodfellas Even If You Go As Far Back As You Can Remember
The Painting Was Made By Co-Writer Nicholas Pileggi’s Mother

Photo Credit: RoderickGunnar/Reddit
Tommy’s mother’s painting was actually done by Nicholas Pileggi’s mother. Catherine Scorsese’s line “Did Tommy tell you about my painting?” was scripted, but much of the rest wasn’t.
That include’s Joe Pesci’s line “one dog goes one way and the other dog goes the other way.” That was all improvised.