Verb: To swerve, as in driving a car, quickly and abruptly from side to side. Tactic often used to see cars that are right on your ass when you're driving a trailer and can otherwise not see them.
When your too drunk to wiggle out of a situation and your last chance to get out of the situation is to swiggle out of it by moving like a snake across the floor well saying I can swiggle out of this.