A few years ago, I was in Mexico, and a friend I was with who is Mexican-American (familial ties to Sinaloa) made a joke that I spoke "snotty Spanish". I didn't get it, and he explained that my Colombian-accented Spanish was seen as slightly uppity.
That is because they are in the same language family. They share common sentence structure and many words are cognates. The kink in the hose happens with language specific idioms.
On the language front--French, Spanish, and Russian (courtesy of your tax dollars)