To ignore someone. Refering to the side button of a cell phone.
oh, that was just my ex. I side buttoned her.
de Postal1134 12 mai 2006
The act of ignoring a call on a cell phone by pressing the side button to silence the ringer.
Alex called, and I didn't feel like talking, so i decided to side-button him
de Deepy 14 avril 2006