a worthy sex partner on the 'road' to orgasm, with the right 'equipment', skills and attitude; to deliver a "mind-blowing" 'treatment'
-neither gay nor straight, male nor female matters! only the right 'equipment' and 'MOJO' to facilitate a successful 'launch'
OR: simply fantasizing on the potential skills of a human, having no idea of their sexual P.O.D. (point of departure)
beth: that dude looks like quality transportation! i'd like to ride him till he 'blows his nose'!!
ruth: that judy is quality transportation, last night she took me to the 'melk weg'! (milky way)
fat people are often not very quality transportation
she/he sure seems like some QUALITY TRANSPORTATION!!