The process whereby a masseur will give a female client a sleazy massage in which he will charge her a little extra cash in hand to conclude the massage with a finger bashing as her happy ending. The female equivalent of a Rub n Tug
Tracey: "Have you heard about the masseur on Long Street?"
Narleen: "No?"
Tracey: "Apparently if you go in and ask for Chuck, he gives a great massage and if you slip him an extra $20 at the end he'll finish you off with a Rub N Plug!"
For use on difficult or reluctant turds that hesitate to come out, but whose presence can be felt in the lower abdomen. One can rub their guts, pressing inwards working the deuce downward until the immediate urge to shit hits.