Nobody in their right mind would fall for such a trap. Also, just take back as Black with the d-pawn. 4.Bxc6 is dubious at best.
As thrillerfan said, bxc3 is idiotic. First off, you simply lose your center pawn (with dxc3 you won't).
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This trap assumes your opponent is a Damiano Petrov playing level of a fool. Why would anyone take with the b pawn lol