look up any word, like twoosh:
A Hispanic person not from mainland North or South America; specifically refers to Puerto Ricans.
Not all Hispanics are Sea Mexicans, but all Sea Mexicans are Hispanic.
by Harthacnut November 25, 2008
Filipino of Pacific Islander of partial Spanish Descent
No, they're not Some Type of Asian, they're Sea-Mexicans!!
by tymmchn September 18, 2008
A Portugese person.
"Dude, I went to Hyannis last week and there was so many Sea Mexicans no one was speaking English."
by The_Third_Person July 10, 2008