The thing about Lamont slamming on the brakes to not hit a cat and causing Fred, whom was apparently in the truck bed at the time, to get injured, is based on another stand-up routine from Redd Foxx, which is how he would rather run over a cat than ruin his car or hurt himself or the passengers in his car slamming on the brakes for it.
Fred doesn't want to be left home alone, noting that "They never did catch that Zodiac Killer." The Zodiac Killer was a serial killer who operated in the Northern California Bay Area in the late 1960s and possibly into the early '70s. Fred's statement still holds true these many years later since the Zodiac Killer has never been captured or even positively identified.
Second and final appearance of Beah Richards as Aunt Ethel.