When two men are wanting to argue wit one woman on who's right or wrong , she starts to image if the two of them were tieable together wit using only two rolls of duct tape
1. Used to experss that it's quite possible for an yet unnamed/unofficial thing to get named in the future.
2. When something is not yet "a thing", but it's still possible to become true.
You: "Hey Stella, is this relasionship between us alredy a thing?"
Stella: "No, but it's pretty thingable."