Ignorant... or Fukin dumber then dirt

So some quick examples of the sheer, "idiocy" that we deal with:
So this chick comes in, right? prolly bout 19 or 20, Hispanic. She rolls in with
the "Twaker" crew.(the meth addicts) I aint ever seen her before, she prolly a noobie twaker. So as her friend is buying beer, She turns to me and says,"you guys hiring?" I reply,"no, not right now." and then, she says(verbatim)," not right now, foo?" I pause for a moment and say,"nah foo, no right now."... I can see that the future is bright for this one. maybe the next "CEO," of Ebay or some shit like that.
Yesterday, this dude comes in to cash a check. We do cash checks but generally from companies we are familiar with. Pulls out the check, I see that I don't know the company, so I tell him,"sorry, can't do it." and he returns with the common,"why?" I'm always so tempted to say,"Just don't feel like it. come back later, I might feel like it then. But then again, you look like an asshole so chances are slim. but you never know." But I just say,"no seh de compania."(my guerrilla spanish for: don't know the company.)and this is what dumbfuk says,"por que?(why) they are your amigos. they are chinese."... I just close my eyes and take a slow breath. No need to get offended. Cuz out here, you learn that they actually believe that shit. And there's no point to try and educate. Its why they're here in the hood. just dumber then dirt.