LOL! That’s great.
I don’t get it. 
It spells out Merry Christmas using formulas…
It was in my Saturday paper last week. They have another one also - very funny…
M is m. 2.718 is e, used in natural logs. r^2 is two r’s, and (1/y)^-1 inverts it to y. So it adds up to “Merry”…
sqrt(x^2) = x. Force/Acceleration = Mass according to F=ma. You get “Xmas”
I like the attached one quite well too. It was reprinted the same day as the Foxtrot one on ucomics.com
That’s a pretty clever way of making people think in an otherwise lazy time of year!!! 
I like it … but how many people would figure it out? I bet that some of my more stubborn friends are going to spend their entire Xmas vacation trying to “brake the code”. I’m gonna use it. 