The 'Confused Unga Bunga' meme features a screencap of the caveman character Grug from the 2013 DreamWorks film 'The Croods,' looking utterly bewildered. The phrase 'Unga Bunga' is a stereotypical representation of primitive speech, and when paired with Grug's perplexed expression, it perfectly encapsulates the feeling of being overwhelmed by modern complexity or nonsensical situations. The meme gained massive traction on Reddit and Twitter around 2020 as a reaction image for when someone encounters logic they can't follow or technology they can't operate, humorously suggesting that the brain has reverted to a prehistoric state.