1 definition by Andy will live forever more...

1. When you fart and it follows you.

2. When you fart, then intentionally 'drag' the fart past them them.

A play on words, referencing both the mighty stench of a dragon and the dragging motion involved when trying to escape your own stench or when subjecting someone else to your delectable odour.
1.
Person 1: "Holy crap, what is that smell?"
Person 2: "Sorry about that, I farted before I got in the car. It must have been a Dragon Tail."

2.

Person 1: "Holy crap, what is that smell?"
Person 2: *look of victory* "I just totally dragon-tailed you!"
Person 1: "You dick!"
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