RE:
Whistle like someone who can't whistle and you more or less have the french, dutch, german U and UU. Very uncomfortable.

Yes, i when i was learning french, the nun would come round and gently pinch our cheeks --not hard enough to hurt--except if we had been practicing our french R's and U's --then our cheek muscles were tender (because to make those sounds correctly, we had to exersize and use facial muscles not normal used in English (and certain not used in how NYer's speak english!)