Eh as a white guy this doesn't bother me personally, it doesn't seem to have any malice behind it and is kinda cute. Maybe if I was subjected to "big nosed foreigner" caricatures all the time it might get tiresome but as a one-off I can take a joke. All the weeaboos who go to Japan wearing the "Baka Gaijin" ("Stupid Foreigner") shirts certainly aren't helping anything though.