DSP or signal/image/data processing jokes Some other StackExchange/StackOverflow sites are entertained with a certain level of humor or fun.  What is your favorite “data analysis” cartoon? is particularly worth  mentioning (IMHO)  this xkcd cartoon on causality and correlation (DSP folks know what I mean):



So Is humor allowed in answers? I hope so, se for instance:


StackOverflow: What is your best programmer joke?
MathOverflow: Do good maths jokes exist
SE.Stats (Cross Validated): Statistics Jokes
SE.Stats (Cross Validated): What is your favorite “data analysis” cartoon?
SE.Maths Questions about math jokes


Humor in signal processing or image processing does exist, albeit shallow, and narrow-spread. I have encountered it first (I had zero humor before) at the ICASSP 2000 DSP humor exhibition in Istanbul, Turkey. The image below comes from Humor in DSP by EURASIP:



So I believe that we deserve some humor and joke tags and actual lightness.
 Go ahead!
An airplane is leaving Warsaw (the capital of Poland), and gets caught in a terrible winter storm. The plane rolls, pitches and yaws. The crew is expecting the plane to crash or break up at any time. But one DSP student suddenly stands up and asks some passengers on the right aisle to move across the plane. Passengers are reluctant but the student insists. “Hurry, our fate depends on your move.” Most passengers quickly leap to the other side, and suddenly the plane stops shaking. The pilot, who had a DSP degree too,  enjoys calming everybody:


  "Thank you for the Poles who have moved to the left-half of the plane for stability."




Additional references:


The Routh Stability Criterion
Warsaw, Poland
Stability Revisited


Another visual pun (dedicated to @MarcusMuller) is this chocolet decomposition: