Dwyane Wade's Ex-Wife -- It's My Constitutional Right to Trash Talk His Ass

It never ends ... Dwyane Wade's ex-wife is poking the hornet's nest again -- this time demanding the right to publicly bash the NBA star.

Dwyane and Siovaughn Funches wrapped up their bitter six-year divorce in July, after Wade agreed to provide a generous financial settlement. As part of the deal Funches agreed to a gag order, prohibiting her from talking smack about their relationship.

But Funches has now filed legal docs challenging the settlement, claiming she never agreed to several terms -- including the gag order.

She wants a judge to nullify the agreement, which would force Wade back to the bargaining table.

As for the gag order, Funches says ... if Wade is free to bash her in his book , she should have the same right to bash him. A judge has yet to rule on her request.