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
v. To snub someone via cell phone by pushing the IGNORE button rather than answering the call.
"Nah, it was just my ex. I side-buttoned him."
de HeyKaren 8 décembre 2005