In case you need a subtle hint, here’s another version:

Source: http://www.xkcd.com/1184/
Further comments, from Nicholas Vanserg, “Mathmanship,” The American Scientist, Vol. 46, No. 3 (1958):
In an article published a few years ago, the writer intimated with befitting subtlety that since most concepts of science are relatively simple (once you understand them), any ambitious scientist must, in self-preservation, prevent his colleagues from discovering that his ideas are simple too…
The object of… Mathmanship is to place unsuspected obstacles in the way of the pursuer until he is obliged, by a series of delays and frustrations, to give up the chase and concede his mental inferiority to the author…
[U]se a superscript as a key to a real footnote. The knowledge seeker reads that
is
calories and thinks, “Gee what a whale of a lot of calories,” until he reads to the bottom of the page, finds footnote 14 and says, “oh.”
Funny but true: as the disaster of the 2014-15 season for the New York Knicks progressed, they had a record of:
http://www.sbnation.com/nba/2014/12/21/7431765/the-knicks-love-math-as-much-as-they-love-losing
A programmer calls home. His wife says, “While you’re out, get some milk.” He never returns home.
Sadly, this is the mindset that algebra and pre-algebra teachers have to face head-on.


Source: http://www.xkcd.com/1389/

Now that Christmas is over, I can safely share the Christmas gifts that I gave to my family this year thanks to Nausicaa Distribution (https://www.etsy.com/shop/NausicaaDistribution):
Euler’s equation pencil pouch:

Box-and-whisker snowflakes to hang on our Christmas tree:

And, for me, a wonderfully and subtly punny “Confidence and Power” T-shirt.

Thanks to FiveThirtyEight (see http://fivethirtyeight.com/features/the-fivethirtyeight-2014-holiday-gift-guide/) for pointing me in this direction.
For the sake of completeness, here are the math-oriented gifts that I received for Christmas:

