Hard as Tits 

Desciribes the hardness or fortitude of an object or person(makes you wonder who's tits they're feeling).

"Goddamnit! These fishsticks are hard as tits!"

Hard as Tits by megaman and bass December 11, 2007

hard as tits 

Describes the strength, fortitude, or solidity of an object.

Goddamn it, these fish sticks are hard as tits.

hard as tits by Ben doooooood December 19, 2007

hard as fuck

To be so insanely tough and merciless. Your average street tough might be hard. But Arnold Schwarzenegger as John Matrix in his 80's hit "Commando", and John Rambo played by Sylvester Stallone are examples of "Hard as Fuck"

Col. John Matrix kills 200 people with an enormous machine gun with his pecs bouncing with recoil. He is hard as fuck.

hard as fuck by Nickerz December 28, 2005

Hard As Fuck

Staying up 15 minutes past your bed time

"Lauren stayed up 15 minutes past her bed time, she is hard as fuck!"

Hard As Fuck by boof dawg December 14, 2014

hard as a rock

To get errected to the point it is compared to a rock

"Your Di*k Is hard as a rock

hard as a rock by Therockhardtroller May 6, 2019

hard as hail 

It is the same thing as hard as hell but correct.

HOLY SHIT DUDE I AM 19 AND I JUST FOUND OUT IT'S HARD AS HAIL NOT HARD AS HELL END ME.

hard as hail by melon_27 June 9, 2018

Hard as a cats head 

very fucking hard. Tough. Almost indestructable. Bullet proof.

#person 1 - is that bullet proof?
#person 2 - Yeah mate, its as hard as a cats head

Hard as a cats head by 98756iugnhhygtfv May 29, 2010