Programmer vs Tester: The Edge Case Olympics

Programmers vs Testers in their natural habitat. The programmer does the bare minimum math and calls it a day. Meanwhile, the tester is over here running through every edge case imaginable—birthdays, death, secret affairs, adoption, and even relativistic time dilation from space travel.

This is exactly why we need QA. Your code might work for the happy path, but a good tester will find seventeen ways it could explode in production. And they'll document each one with painful precision while staring directly into your soul.