Then it would just me "Mas" which is Spanish for "More". Which is the perfect way to describe this holiday. We all want "more" presents!
Except in spanish we say Navidad (from the same radical as nativity) and mot gifts are exhanged on the Reyes Magos holiday (jan 6) which celebrates the "visit of the Magi to the baby Jesus" (had to look an english way to explain it lol)
Latin Maerica does it the US way though so... fuck it... your joke works
Lately it has been in Spain 50% Papa Noel (Father Christmas/Santa Claus) 50% los reyes magos (The three wise old men) as some people believe it's cruel to give the presents only one day before going back to school. I prefer to keep the tradition, but I understand why some people give the presents the 25th.
OT: I don't care how people call it if they try to be better human beings. Internet forums don't apply