not a leg to stand on

She worries that her writing has "not a leg to stand on" because it's born from "affective experience" and not argument.

“I’m not orchestrating the activities or disclosures of WikiLeaks,” he continued, adding that those who accuse him otherwise are “partisan hacks with not a leg to stand on.”

Salon's Daniel D'Addario that part of the problem is that Ms Keller shared private messages she had received from Ms Adams: "This is a breach of ethics of a high order in addition to just being evidence that Ms. Keller has not a leg to stand on in her vague insinuation that Adams is giving 'TMI' by blogging about cancer - if her case were sturdy, would she need to bolster it by leaking private correspondence?"

You’d have not a leg to stand on and not a handle to your name.

The world, however, is sick of its philosophy; and the Socialists have left it not a leg to stand on.