Obviously it's a play on the name of a famous muscle car (the Pontiac Bonneville) though it refers to neither muscle nor car, but a very stiff erection that steers its owner wherever it wants to go (to a nice warm parking garage of course).
Plaza Mexico ...located in the heart of Lynwood CA. Every mexican Family is found there every weekend... and every one is there with their great grandmama and so on... the whole frijolito fam. is there...lol it resembles Mexico so every one that can't go back goes to a mexican theme plaza owned by koreans... yup... also all the under aged mexican white washed ravers go there on sundays to shuffle..