Jack Nicholson has perfected a swimming move even Michael Phelps won't try ... the 50 meter backsmoke.
The 72-year-old enjoyed a cig, while floating in the waters off France this weekend.
Who needs a flotation device, when you got a cancer stick?
Jack Nicholson -- Aqua Lung
8/3/2009 8:00 AM PDT BY TMZ STAFF
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