What Exactly Is A "cold One"?

My grandma used to get annoyed with me and my sisters and sometimes she'd threaten us with this empty threat- "I'm gonna jerk a cold one outta you!" What the hell does it mean?? As kids we knew it was a threat and that we were annoying her but I was always a little curious what exactly a "cold one" was... Was she gonna jerk us so hard we cra pped out a can of cold beer?
BrokeElectrix BrokeElectrix
26-30, F
Jul 21, 2010