The Crips, originating in Los Angeles, California, are one of the oldest, largest, most violent and most notorious of African American gangs in the United States. They have been involved in murders, robberies and drug dealing in the Los Angeles area. The Crips are mostly identified by the blue color worn by their members. What was once a single gang is now a loose network of "franchises" around the United States and Canada.
Crips is largely composed of African Americans, but is multiracial in many cities (e.g. New York), where "satellite" Crip gangs are present. The gang has an intense rivalry with the Bloods. They are also known to feud with Chicano gangs.
using a metaphor of Spongebob being square, hence a square ass mothafucka.
mane don't fuck with them spongebobs mane they gonna get you caught up wit the boys (police)