That curl the common man into fetuses
A reference to the complexity of the treatises mentioned in the previous line. They are so difficult that would make a man trying to read them curl into fetal position (ironic, given their Marxism, i.e. their ostensible purpose of liberating the “common man” from the drudgery of capitalism).
To help improve the meaning of these lyrics, visit “Rapping 2 U” by Das Racist (Ft. Lakutis) Lyrics and leave a comment on the lyrics box