Definitions by Solkana

doing a sonic 

The act of finally defecating after a strenuous time holding in the urge to not shit your pants. Creating loud noises in the bathroom while excretion.

Guy 1: what are all those loud ass noised in the bathroom, are you okay?
Guy 2: I'm doing a sonic right now!
*Fart noises and shiting*

doing a sonic by Solkana April 18, 2021