I saw "WTF NOOB" on a Jetta in hollywood and was instantly jealous.
My friends also have:
NIE FLGN (Never Follow in German) - Audi S4
VTEC THIS - Same S4 (old plates)
O SEISSE (oh shit in german) - Audi A4
And I saw a picture of an E91 m-tech with the california plate "DEL TACO" on the forums, haha