Did Jason Develop Courtesy?
When Jason starts killing people at the house, one of the twin girls decides to leave while her twin sister sleeps with Crispin Glover. She heads out in the rain to the tree where her bike is. She takes her bike off the kickstand and Jason impales her and sticks her to the side of the house, knocking over her bike. Later when her twin looks out the window she sees both bikes, but her sisters bike is not on the ground, it has been placed back up with the kickstand out. Did Jason take the time to place her bike back in it's original position?
The Magical "Air" Mattress
Judi Aronson's character gets stabbed by Jason while she is floating on an air mattress in the lake. Wouldn't the mattress have deflated upon being punctured by Jason's knife? This same mattress is seen floating in the lake (completely inflated) later in the film.
