Plot twist, Papyrus stumbles upon (maybe with Frisk’s help) on the music of some of the rock/metal artists he has shirts for and actually likes the music, or at least some of it.

simonsoys:

Here for Papyrus and Frisk going absolutely bonkers at a hard rock concert. (W/Toriel as the disinterested but supportive chaperone.)

Please take this moment though to consider how much of a ROCK GOD Papyrus would be at any metal venue.