They may be expecting us to ask for water after traveling all those light years ;)

I was thinking more along the lines of crop genitalia, but circles will work just as well.

It would be hilarious. We also have to abduct random livestock and aliens along the way, you know, for banter.

Lets freak them out like they freak us out.

Alien1: "The F' is this?"

Alien 2: "It's those humans again! Run for the hills!"