To be someone's backup if their other, more desirable option falls through/passes out/falls off a balcony/runs out of money.
A: "What are you up to tomozzle?"
M: "I'm going out with the ladies to try and pick up. But I'll call you if nothing comes through"
A: "Negative Dude, I'm nobodys Second Choice Susan, forgit it"
M: "I'm going out with the ladies to try and pick up. But I'll call you if nothing comes through"
A: "Negative Dude, I'm nobodys Second Choice Susan, forgit it"
by Andrew McUtchen October 12, 2007