A sub or spucky that is expired/overdue and can mostly be found at your local gas station or rat/cochroach infested spucky joint, can also be said as cock-a-roach sandwitch/spucky/subby/hogie (See example 2)
Bobby: Hey wanna go get a couple of spucks down at the gas station
Kevin: Nah mullen went there last week and told me they dont got nothing but cochroach sandwitches
Edith: Do you young boys want a few spuckys
Robinson: Fuck the lady yo, she got a buncha cock-a-roach sandwitches at her place.