That means what?

I called a brewery restaurant the other day to see what they were currently pouring. When the girl answered the phone I asked what their current tap list was. She seemed flustered and asked what I meant. I thought it was strange that this term was foreign to her, so I explained that I wanted to know what was on tap. She sounded relieved, and told me what was available. It was some time later that I ran across this definition for "tap list" from Urban Dictionary: "A figurative list of guys/girls you want to have sexual relations with. See tap." This could explain a lot. I guess from now on I'll choose my words more carefully, and remember that I'm not as young as I think I am!