Explanation
This is a memory sentence to help you remember the order of atomic orbitals - the different regions around an atom's nucleus where an electron is likely to be found. Take the first letter of each word: Sober Physicists Don't Find Giraffes Hiding In Kitchens → S-P-D-F-G-H-I-K.
The first four letters (s, p, d, f) come from old spectroscopy terms - sharp, principal, diffuse, and fundamental - and are the ones you'll actually run into in real electron configurations. After f, the letters simply continue alphabetically (g, h, i, k, and so on), skipping j because it's too easily confused with i.
Note: the g, h, i, and k orbitals aren't used by any element discovered so far - they only start to matter for hypothetical, much heavier elements that haven't been created yet, so don't worry if your chemistry class never mentioned them.