Bad Joke Trex, also known as the Bad Pun Dinosaur, features an image of a T-Rex delivering a corny pun and looking expectant of a laugh. This classic Advice Animal style meme rose to prominence in 2011 across platforms like Reddit and Tumblr, capitalizing on the popularity of 'dad jokes' and wordplay. The humor stems from the juxtaposition of a fearsome predator telling harmless, groan-inducing jokes. It is widely used to share puns that are so bad they are good, often paired with a punchline that relies on prehistoric or reptilian themes.