He clicks on the link. It redirects him to twitter, and Zoro goes still immediately once the post opens, his eyes widening as the pictures load. Whatever he's been expecting, it surely wasn't that._OR Sanji is the proud owner of a femboy account and posts adult content to the internet to get by in life; Zoro just happens to like the man's smile (and content). Shenanigans ensue.
Post-canon: Red-Leg Zeff finally gets to go to the All Blue to settle down with his adoptive son and (maybe unfortunately, he's not sure yet) his son's husband.
Mind the tags - this is a sequel and an ABO story :)