Latino/Hispanic

He's got the Romance languages down good. And Dutch and German are pretty logical to work on after learning English. But Polish? Since he speaks it with a Chicago accent, I will guess that one of his friends is a Chicagoan who has passed on their odd way of speaking to him. Either that or he spends a lot of time listening to WPNA.

What's interesting to me is the accents these polyglots pick up (myself included) when they learn another language. It's usually not L1, but some locally identifiable dialect or accent that makes native speakers of that language raise an eyebrow.