Continuity mistake: When Lampwick sprouts a tail, the patch on the seat of his trousers has stitches around it. These stitches disappear moments later.
Continuity mistake: When Lampwick says "Ah, you smoke like my grandma" the white pool ball has moved to the other side of the table from where it was when Lampwick made his last shot.
Continuity mistake: When Lampwick is playing pool, the blue ball moves closer to the edge of the table between shots. Other balls change position as well during this scene.