Bedrock, harder than a motherfucking Flintstone
from Tyler The Creator (Ft. Anwar Carrots) – Yonkers Lyrics 1 on Rap Genius
In stratigraphy, “bedrock” is the native rock underlying the surface of a planet (The Flintstones' hood was a pun! Did you know that?)
Tyler is claiming to be really “hard” (tough)

Young Money used the same reference to a different end on their song “Bedrock,”. B.o.B made a reference to this line in his Odd Future diss titled “No Future.”
Or, Tyler might mean by “bedrock” that he actually “rocks” his bed (by having very rough sex) as much as a Flinstone would. He’s probably also referring to his dick when he says “harder than a flintstone”, comparing the hardness of his dick to a rock.
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