Stare at the center long enough and the dots will disappear!
Before it was unsolicited email, Spam was a luncheon meat. It is so resistant to spoilage that, if kept in the closed can, it may well outlast eternity and will certainly live longer than you. Believe it or not it was first promoted as a health food. In Korea it comes in gift boxes, and placed end to end, all the Spam ever sold would circle the Earth more than ten times.
"I not only use all the brains that I have, but all that I can borrow."
Woodrow Wilson