in the anime Soul Eater it is used for students to contact Shinigami-sama via 42-42-564 it means Death-Death-Murder in Japanese Numerics
soul | Soul music | soul music | De La Soul | Collective Soul | Soul | Soul Train | David Soul | Soul Asylum | Chicken Soup for the Soul | Soul Man | Soul Food | Green Bee-eater | Soul Train Music Awards | Black Saint/Soul Note | You're My Heart, You're My Soul | Soul Man (film) | Soul II Soul | Philadelphia soul | Catch My Soul | Warrior Soul | Video Soul | Super Soul Sunday | Soul Survivor | Soul Revolution | Soul Rebels | Soul Note | Soul Makossa | Soul in the Hole | Soul for Sale |
This kind of censorship was typical for Lala in To Love-Ru, Blair in Soul Eater or even Asuka Langley Soryu from Neon Genesis Evangelion.