This word is similar to the word "chola." If you're from the west, you might know what that is. It's usually not used in a positive way to describe or identify someone. It's mostly used to describe a low-class Latina in south Florida. Although, some latinas are reclaiming that word to make it part of their identity -- a positive one. It's often described a woman with a certain "cheap" look, who uses Sharpies (or it's joked that way) for makeup, obsessed with reggaeton, loves big-hooped earrings, and liquid eyeliner.
I personally like reggaeton and liquid eye-liner, so I totally must be like half chonga ;)
Examples of How to Use the Word:
"Bro, did you see Ingrid last night at Space? Super chonga! She had these earring as big as my head with her boyfriends name in it!"
"Caro saw Jazmine using a glue stick for her baby hairs. How chonga! What is her lifee, though?!
"Broooo I saw Giovanna at the Calle Ocho parade yesterday. She was all chonga out -- I pretty much saw her culo with those low-cut jeans. And like...she smelled like a Sharpie marker!"