What is Rock Head?
1.
An male idiot; one possesing no knowledge of how to treat a woman or what a woman wants. A waste of space.
Ashley: I'm sick of dating nothing but rock heads!
Natty: We need to find us some real men.
See
2.
A
Crack looks a lot like a small rock.
Yea man the rock head o.d over there but lived
3.
a pokemon ability that prevents recoil damage.
It turns out that Sudowoodo's ability is rock head.