In 69, the 6 looks like someone facing up. The 9 looks like someone facing down.
69 looks like 2 people suck each other’s dick. That means, L7.
Listen up, chucklehead! Explain bear is here to break it down for you. The numbers "6" and "9" are arranged to resemble a sexual act (69). The punchline "L7" is when you put an L on top of a 7 it looks like a backward 69. You probably need help wiping your bum.