It happens with any word just look at it, or repeat it long enough, and it will sound completely strange....
There actually is alot of forien language in English though, in it's early days English kept borrowing words from different languages mainly Latin, and French, but some other stuff got thrown in to, it still does it to some extent, for example how many times lately have you heared somebody say the word Uber, instead of super, shhhhh, noboddy tell the Germans that we stole there word, or even made up words, how many times have you caght yourself useing the word "Frack" lately (To much Battle Star Galactica....), or if your reall Geaky "Frell" "Dren" "Hourn", or "Microt" (To Much Farscape....), or "Felgercarb" (To much Battle Star Galactica The Origional Series....)....