He pulled a lot of tail last night.
Is that just the angle of your tail or are you happy to see me? Oh, the former? Makes sense.
They totally get off on the forbidden love.
"Just let me put the finishing touches on your tail... and voila!
In an interesting turn of events, his tail ended up chasing his tongue.
If anything the loin cloth should cover the tail, the most sexual appendage on a Na'vi.