like为likely之误。

You'd as likely have angles fly out of your arse as get next to the likes of her.

just as likely ... as ... A 与 B 的可能性完全相同。

A=have angles fly out of your arse

B=get next to the likes of her

直译：你想接近像她那一类人士, 与想要从你屁股中飞出天使的可能性完全一样。

意译1：你想接近她那一类人士，简直是不可能的。

意译2：你想接近她那一类人士，简直就是癞蛤蟆想吃天鹅肉。