User blog comment:Diehangar/Luffy Mother - minor Detail or a Piece of infrmation that will change the flow of story?/@comment-3060121-20120526015509/@comment-5166678-20120526124418

No, Skipper here is indeed correct. Dragon, being the badass he is, clearly summoned Luffy from his imagination into the real world. It makes plenty of sense if you don't think about it too much.

Visual explanation.

http://i1152.photobucket.com/albums/p483/Sergant0Alpha/Wat-2.png