Marty's younger self says he thought he'd die spectacularly, "like in a dancing knife-fight from West Side Story." He does some dance moves and pretends to fall down dead.
Referring to Steve and Marty, Aunt Pam says, "I wouldn't trust Ren and Stimpy here to fix the fabric of time." Doing an impression, Marty replies, "Stimpy, she thinks we're eediots!"