George Michael knocks on Lucille 2's door when he goes to visit Lucille.
Since GOB took four years of Spanish, it can probably be presumed that Michael, raised in Southern California and having attended the same high school as GOB, also took at least one year of Spanish. In High school language classes, directions are as common, if not more common, than relations in remedial language classes.
When Gob goes to hit Tio, he uses his right fist. Earlier in the episode, Gob states that he doesn't hit with his right hand because he needs it for his tricks (so he lets his left fist do the talking for both fists).