I get the sense that Raven is attracted to the llama, who is quite handsome, but is repelled by her seemingly abnormal longing. She attempts to bridge the gap by imagining being the llama, rather than being with the llama.

The movie line is from an old favorite of mine, isn't it? Although I don't remember them specifically saying they were undercover as shepherds of any kind.

Nrrrrr! That's not it - think Intergalactic and an actor whose name sounds very much like Parrison Gord.

I'm just yankin' your chain. I hope the site of Chevy in a yak suit wasn't too painful. Of course I know you're talking about Space Balls.