Said "goal" is usually the love/affection of a person who is already in a relationship. First you become their friend, their shoulder to lean on when times get tough with their partner, the person they share their secrets with - then when they suddenly become single, what do you know? You are now their #1 option. BAM - shankshaw'd.
- But he already has a girlfriend.
- Don't even worry about it...I'll start shankshawing now, and in about 6 months, he'll be mine.