Strangely, in Amy Winehouse' song "In my bed" there's a line in the chorus which goes:
So sorry if I turn my head
Yours is a familiar face
But that don't make your place safe
Obviously, "that" is like "it" and should be followed by "doesn't".
Is this a bold grammatical mistake? some extremely regional British* way to conjugate verbs? or maybe simply a style thing, to give the song more "colloquial" feeling"?
A link to the song itself (it's from her Vevo so it's legal to share)
a link to the lyrics
*although the song itself is sung with an American accent.