Has no solid definition. Just something drunk girls say back and forth to each other every minute to signify that there going to fuck the guy their sitting next to.
Ex.1
Person A-"I'm going to the bathroom..."
Person B-"FER SURE!"
Ex.2
Person A-"..........................................."
Person B-"Fer SURE!"
Person A-"I'm going to the bathroom..."
Person B-"FER SURE!"
Ex.2
Person A-"..........................................."
Person B-"Fer SURE!"
by abc12390 January 01, 2012
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