The '77+33 Doesn't Equal 100' meme highlights a common psychological phenomenon where the human brain mistakenly rounds up numbers to a 'clean' hundred. Because 7+3 equals 10, the intuition suggests that 77+33 should result in 100, whereas the actual sum is 110. This cognitive dissonance has become a staple of internet culture, often used to represent feelings of betrayal by one's own logic or the frustration of realizing a simple mistake. It gained significant traction on platforms like Twitter and Reddit, where users share their shock and humor regarding this specific mathematical trick that feels 'wrong' even though it's mathematically correct.