A genre of porn, usually involving both men and women, banging each other. Usually looks like a bunch of apes in mating season. A related offshoot of this is bukkake
This title was based off the definition of hardcore as something that is intense or very strong.
OMG! HARDCORE PORN!
Hardcore porn involves ugly stick-women being boned until they break apart.
man 1 : what kind of porn is that?
man 2 : It's hardcore! Lots of endless fucking