code-switching galore

so i'm walking home from the bus stop this afternoon, when the guy in front of me stops suddenly and starts rubbing his knee. half thinking i should ask if he's ok, half thinking that is sooo the oldest trick in the book, i keep walking, minding my own business. sure enough, about 30 seconds later, his knee is mysteriously healed and he's caught up to me. the following conversation ensued:

random guy: wir laufen den gleichen weg.
yours truly: anscheinend.
rg: kommst du aus ingelfingen oder bist du hier zu besuch?
yt: [thinking, hmm, that was an interesting way to phrase that question--kind of limits my options in answering, eh?] ich wohne in ingelfingen. [how you like them apples, hey?]
rg: ich geh jetzt a bissl heim.
yt: ... [na, und???]
rg: (repeats) ich geh jetzt a bissl heim. ich musste was in Kuenzelsau erledigen, und jetzt geh ich heim. meine mutter besuchen. ich wohne aber alleine. proceeds to tell me which family he rents the apartment from and lists other neighbors names. i don't know any of them.
yt: schoen.
slightly awkward pause
rg: gehst du noch in die schule?
yt: [laughing--is he for real??] neeee.
rg: wie alt bist du, wenn ich fragen darf?
yt: [rolling eyes über-dramatically, debating whether to bother with a response] 25
rg: ich bin 27.
yt: [shrug--that's nice]
rg: ich haette gedacht 19 oder 18.
yt: [still rolling eyes] danke
rg: blabs on about how it's better to have people think you're younger than you are, and how when he was 15 everyone thought he was 18 or 19, but now that he's 27, everyone thinks he's 23 or something.
yt: mmhmm
another awkward pause
rg: ich bin griecher.
yt: [nod]
rg: warst du schon mal in Griechenland?
yt: nee, noch nicht.
rg: schoenes land, griechenland.
yt: das hab ich schon gehoert.
rg: das hast du schon gehoert?
yt: ja, ich wuerde gern mal hin.
slightly less awkward pause
rg: warst du schon mal im Ausland?
yt: [i'm dying at this point, right...] mmm. ja.
rg: und wo warst du schon?
yt: [laughing. i mean, i can't help it! is he serious?] in den USA, in Ungarn, in... (first of all, yes, i know als echter deutsche sagt man "in amerika" statt "in den USA" but i can't pronounce "amerika" auf deutsch, no matter how hard i try!!!)
rg: [interrupts me] in amerika?? echt? wo in amerika?
yt: [shaking head. i still can't believe i'm having this conversation.] mm, ueberall, eigentlich.
rg: [eyes growing almost embarrassingly wide] was? wie? kommst du nicht aus deutschland? bist du auch auslaender?
yt: amerikanerin.
rg: amerikanerin, echt?
yt: [seriously, would i make that up??] jaaaaa.
rg: you speak english?
yt: jaaaaa.
rg: you understand english?
yt: [is this a joke?? ]jaaaa.
rg: this is my house.
yt: super [i keep walking]
rg: ok, bye
yt: tschüss. schoenen tag noch. [i walk away still shaking my head]

p.s. i got off easy on that one. usually they insists on following you a while longer. phewww.
you WISH this was your life.