Significance of black dress change Lisa / Michelle.
The first black dress with a slit high up Lisa's waist is later on worn by Michelle. At the beginning I thought it must have been another continuity error, but even Johnny comments on it.
I think it is Wiseau thinking "Let's throw in a Lesbian sex reference. Heterosexual male cinema goers will get hot on that.".
Any other idea about this exchange of person wearing dress?