rocksolid

a p-rn star who has a p-n-s that is as hard as a rock.
tommy rocksolid took 2 plungers to the toothless girl at the bar.
a dance gavin dance song that is amazing.
well, it doesn’t really matter right now because you are rock solid.
if some1 does something extremely stupid, or hypocritical, they can be said to have done a, or been rock solid.

the meaning of why you say “rock solid” is left to interpretation, it’s funny any possible way.
person talks about something and is completely wrong in every way. you can then say “rock solid” indicating they are dumb/stupid.
a person who makes stupid comments and cr-ps on about total sh-t.
a rock solid usually says:
dip dip
p-n-s v-g-n-
poofta p-n-s
if u were my father id adopt u
someone who is extremely unreliable in every aspect
dude 1: nah dude, dont let john get the stuff, hes rock solid
dude 2: f-cking anoying
being rock solid means being well grounded with someone close to you , to be close in a friendship, relationship, etc. to stay honest, and real no matter the circ-mstances.
he was honest in everything he did and said, we’re really close friends, i told him everything and he didn’t tell a soul my deepest secrets. his character is rock solid!
somebody who just did something really dumb and probably didn’t think about it or did something dumb by accident would be “rock solid.”
let’s say your friend just fell off his chair. you would say, “haha, dude you’re rock solid!”