Here are some common uses:
* "Dropping duces" means spending $20 bills.
* "Hit me with the duces" means give me $20.
* "Two duces" means $40.
The word is a slang term derived from the $20 bill, which features a portrait of Andrew Jackson.
It's important to remember that slang terms can vary in meaning depending on location and context. If you're unsure about the meaning of a particular slang term, it's always best to ask for clarification.