For decades, software developers have been slipping jokes into their work. One of the most enduring, clever, and geekily satisfying inside jokes has been hiding in plain sight: the recursive acronym.

Get ready to put your detective skills to the test. In these funny pictures shared by the Twitter account @Thereisnocat_, ...

Objects artfully camouflage themselves in their environments, hiding in plain sight and challenging our perception abilities. If you like to solve brain teasers and detect concealed details ...