Trivia: Bill Moseley got the role of Chop-Top because he made a parody short film of the original "The Texas Chainsaw Massacre". Moseley's film was called "The Texas Chainsaw Manicure". Series co-creator Tobe Hooper saw the short and loved it so much that he cast Moseley in a major part when "The Texas Chainsaw Massacre 2" went into production.
Trivia: Tobe Hooper played up the black comedy in this sequel as he felt that all the dark humor in the original had been ignored by audiences due to the film's shocking content. He wanted to make sure that audiences knew the film was meant to be scary AND funny.
Answer: It's basically Leatherface's version of an orgasm. Stretch appeals to his sexuality in order to survive, and he's aroused. He uses his chainsaw as a phallic object, rubbing it against her leg and then pressing it into her groin, and is panting, which obviously symbolizes his idea of sex. And then he becomes aggressive, revs up his chainsaw, and destroys the studio in an explosive emotional display, not unlike the strong physical/emotional sensation that comes with an orgasm. You could also theoretically make an argument that the mess he creates by sawing and throwing things around specifically represents male ejaculation, which involves a pulsating release of semen and can be, let's just say, "messy" sometimes depending on what sexual activity you're doing.
TedStixon
Thank you.
Rob245