Volcanic WHAT???

I was returning from dinner with Timothy, Bevon and William. This is a snippet of our conversation:

Me: ""Black sand"? There's "black sand"?"

Bevon: "Yeah, it's like sand from volcanoes."

William: "Yup. The sand comes from volcanic er... err... volcanic errr... hmmmm... volcanic erections."

Me: "Volcanic WHAT???"

Hilarity. These little moments really make my day. Thank God for friends.

Yes. Even the really clueless ones.