Aftermarket Umbilical Cord
When two people dreadlock their genital pubes with each other's, creating a bond as strong as the hair roots on each's upper genital area. Can also be called "Hairy Symbiote"
Bro1: I've been feeling so disconnected from the world recently...

Bro2 (down-to-earth guy): I'll help you back down bro, let's try the aftermarket umbilical cord"