Surfing in a dry desert
The puzzle
A man went surfing in the middle of the desert.
There was no water.
See the answer (spoiler)
Spoilers from here on. If you want to work it out yourself, leave this folded and move on.
Answer
He was sandboarding down a dune.
You ride the slope on a board, much as you would on snow — it is popular in Dubai, in Peru and in Namibia.
