In Spanish slang, 'San Juan' usually doesn't have a specific slang meaning. It is primarily a proper noun used to refer to several cities and places named after Saint John in Spanish-speaking countries. However, in some regional contexts, it could be used in idiomatic expressions or local phrases.
Examples
- Spanish: Voy a visitar San Juan la próxima semana.
- English: I'm going to visit San Juan next week.