New Zealand's Boobs On Bikes Parade -- Check Out the NSFW Kiwis!

Motorbikes are the new motorboats!

The streets of New Zealand were bombarded with topless babes on the back of badass Harley's to promote an erotica expo ... and it certainly got our attention!

As to why they're holding American flags in NZ ... who knows -- but nothing says freedom like nudity and choppers!