Jubilent

A 'jubilent' is a person who is happy all the time. The misspelling from the original English word indicates authenticity and uniqueness; despite a jubilent being odd and perhaps out of place, they still replicate, and perhaps exceed, the happy spirits of the word jubilant.

That guy is a Jubilent! He literally smashed his face but he's still smiling and chatting up girls..!