Pronounced Mur-fee Dahy-ving: A Scotish-Cuban finishing technique of using the mouth, especiallythe tongue with the intent of bringing a local female to orgasm.
-Your driving skill is inversely proportional to how attractive your passenger is.-
The non-gender-specific propensity for things to go horribly wrong whilst attempting some vehicular stunt when an attractive member of the opposite sex is involved.
John: "I've drifted that corner a hundred times with no problem, but as soon as Jane was in the car, it all went to hell and now she's left me and my car is totalled...."