Hardcoretty 

some one who is pretty hard core

Gucci is Hardcoretty mate

Hardcoretty by Samantha Sapal June 11, 2006

Hardcorest

Of most hardest core.

Man1:What's "hardcorest" mean?
Man2:Of most hardest core, stupid.

P.S. Black metal can't be hardcorest.

Hardcorest by BlaxM3T4LSuX June 19, 2010