The Room/Fridge

Fridge Brilliance

 * Possibly unintentional, but Hit is another word for wanting to have sex with someone, so in a sense, Lisa WAS telling the truth when she said Johnny "hit" her.
 * Definitely unintentional, otherwise we're crediting Lisa more intelligence than she has.
 * Mark tries to pressure Johnny into telling him confidential information from his work. Johnny then follows up by asking: "How's your sex life?" Though it seems like a non sequitur, Johnny is trying to show Mark how he is making him feel in requesting personal 'confidential' information.
 * Wow, that would be pure genius if anything else in that movie indicated that Johnny was capable of that level of subtlety.
 * I occasionally wondered, in lieu of Johnny's "Maybe I know more than you think I do" line later on in the film, if this wasn't perhaps supposed to be a ham-handed hint that Johnny suspects Mark's banging his fiancee. But, of course, that would be implying that Tommy Wiseau is capable of subtlety.

Fridge Horror

 * It was said Lisa has been with Johnny for seven years. The actress was 18 and didn't look too much older.
 * She is portrayed as being older than the college aged Denny.
 * Mark's I Have This Friend conversation with Johnny about wondering if girls sleep around takes in a whole new horrific meaning when he talks about a girl cheating then getting the crap beaten out of her. Taken in the context of the nature of the chat, it implies Mark was the one who sent a girl to the hospital. His murderous rage at Lisa at the end of the film does not bode well for her.

Fridge Logic:

 * If Denny comes over to Johnny's apartment all the time, why has Lisa's mom never met him before the events of the movie?
 * I was going to say that maybe that was Denny's first scene in an earlier cut of the film, but then I remembered how seldom characters get introductions in this movie.