From my understanding, it is a slang term in Spanish that best describes delusional trashy people who falsely believe themselves to be of higher class. So think of the character Joy Turner in My Name is Earl as an Anglo example of such. In northern region of Mexico of the state of Chihuahua, Nacas usually falsely believe themselves to "Fresas."
"That stupid Naca that bought all her clothes at Ross and has crappy queen style eyelashes believes she is wifey material?! Hit it and quit it at best."
by B Buffalo January 7, 2022
 Get the Nacamug.
Get the Nacamug. by NeuralSky August 2, 2018
 Get the Nacamug.
Get the Nacamug. by D December 8, 2003
 Get the NACAmug.
Get the NACAmug. by abdi903 March 17, 2019
 Get the nacasmug.
Get the nacasmug. " Ayo nacas what are you doing"
by waryagale December 9, 2022
 Get the Nacasmug.
Get the Nacasmug. by sixes  February 7, 2023
 Get the NACAmug.
Get the NACAmug. Me :“ Ay AJ. Ay pay for this bariis and hiliib g”
AJ: “MB fam i forgot my wallet”🤡
Me: 🤦🏾 ♂️ omds u Nacas get ready to run u wallad”.
AJ: “MB fam i forgot my wallet”🤡
Me: 🤦🏾 ♂️ omds u Nacas get ready to run u wallad”.
by Cadaanka_iska_illali August 6, 2022
 Get the Nacasmug.
Get the Nacasmug.