Not much more needs to be said, man: The lava lamp "first hit stores in Britain on this day in 1963."
According to The Associated Press, the groovy light "was created by British inventor Edward Craven-Walker, who was inspired by an odd-looking liquid-filled egg timer he saw in a pub in southwest Britain."
There are many lava lamp apps out there. Videos, too. We'll post this serenely simple one. Dim the lights, sit back and enjoy if you wish.