Can you call it a margarita when it's made with chocolate?

I suspect that when people say they favor margaritas over other bar drinks they are talking about booze that's been whirled in a blender with ice and strawberries or acai nectar, or anything that's been shaken with tequila and poured into a salt-rimmed glass. But when does a margarita cross the border and stop being a margarita?

Source: http://dailyherald.com/article/20120501/entlife/705019809/

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