The loud laughter that you hear is coming from those extraterrestrial beings who made the Egyptian pyramids .
They're laughing at a new theory explaining how those huge stones were brought across the desert.
This new theory (if it holds water) claims that the pyramid builders simply made the sand wet to allow them to easily drag, pull (push?) the giant stones.
Voila & eureka!
They then could start building their pyramids.
The wet sand decreased friction, and, thus, the stones slid smoothly across this moistened sand.
Beer that the pyramid builders drank also helped a lot.
IT'S ABOUT RENEWABLE RESOURCES!