The Flintstones (1994)

Continuity mistake: In the bowling scene, beer froth disappears from one bowlers face after they howl. (00:15:20)

Hamster ★

Wilma Flintstone: We have scrimped and saved for that money, and every time we get a little bit ahead, you have to go blow it on some hair-brained scheme.
Fred Flintstone: Now see here, Wilma! In this cave, I am the king! And.
Wilma Flintstone: And what, Fred?
Fred Flintstone: And you have every right to know, my queen.

Trivia: Mel Blanc did the voice of Dino. This is only significant if you consider the fact that this film was made in 1994 but Blanc died five years previously in 1989. The film-makers used tapes of his original sounds from the 1960s TV show.

Question: On Fred's first day of his new promotion, he says "I'm only one man, Barney." To which Barney responds."Not from the back" and they both laugh. Could someone please explain this gag to me. I have tried for years to understand it, with no luck.

Gavin Jackson