Sexy primes Memes

Only mathematicians could find something sexy about numbers that differ by exactly 6. The rest of us are busy with actual dates while they're getting excited about (5,11), (11,17), and (17,23) pairs. Nothing says "hot" like a specific integer difference between two numbers that can't be divided by anything except themselves and 1. Mathematicians probably have posters of these number pairs on their bedroom walls.