you open up the hitchhikers guide to the galaxy a small black device resembling a calculator. You turn it on and the friendly words

"DONT PANIC"

appear on screen and you displays the featured definition of the word towel:A towel is one of the most massively useful thing that a hitchhiker can have with them. Partly for it's physical comfort and partly for its psychic effects. If a stag (non hitch-hiker) discovers that a hitchhiker has a towel he will assume the hitchhiker has a toothbrush, toilet paper, spacesuit, etc and will give it to the hitchhiker if they say they've lost it. hence a phrase has been created in hitchhiker culture: "Hey, you sass that hoopy Ford Prefect? There's a frood who really knows where his towel is." (Sass: know, be aware of, meet, ; hoopy: really together guy; frood: really amazingly together guy.)” your fingers are excited to type anything in the universe into the guide