Post-ironic Beardcore (or PiBxC for short) describes a genre of hard/metal/math/etc. -core music whose practitioners choose to openly wear often extreme facial hair in a genuine manner despite the proliferation of facial hair as some form of "ironic" rebellion among the world's youth community in the late 00's.

The most notable true-blue PiBxC band is Canada's Protest the Hero; although bands such as Thrice, Coheed and Cambria, Alexisonfire, Silverstein, The Dear Hunter, Valient Thorr, The Red Chord and many more share some early-/proto-PiBxC elements in their music as well as having provided a marketable basis for the genre to come to fruition. The oldest elements of PiBxC -however- can be found within Ironic Beard Rock bands such as ZZ Top and The Beatles who also decided to genuinely wear facial hair in a time when growing a beard was considered the rebellion d'jour.