Sanic usually refers to ear rape or other forms of extremely loud spam. Derives from the YouTube video "HOW 2 DRAW SANIC HEGEHOG" in which the uploader draws an extremely mediocre Sonic the Hedgehog while a messed up version of music from the Green Hill Zone stage.
Spinoffs include "HOW 2 DRAW MAREO BROTER", "HOW 2 DRAW: HOMRE SIMSON", and "HOW 2 DRAW LEFEND ZEDLA"
Guy 1: This kid was mic-spamming Sanic in our Vent room.
Guy 2: What a noob.