It makes you sick?

I'm not a regular reader of People Weekly, (yes, I feel compelled to point that out before quoting the magazine) so I'm not sure if the following is a grammatical blooper or purposeful, yet subtle, satire.

A blurb-with-picture in People describes Paris Hilton's recent Mediterranean yachting vacation with friends. Apparently, they suffered 12-ft seas on the way to Sardinia. The paragraph-long story ended by saying that the group made it safely to port, but "more nauseous than before."

Now, I'm sure the nauseous waves made them feel nauseated, but is it possible for Paris Hilton to become "more nauseous than before?"