Instead of the above definition, should this not be: "running like the bitch that you are", best said to a man as a derogatory insult? (but also versatile and useful in insulting a female, should you wish to).
Definition: a noun describing the act of running like a bitch, where bitch is probably better spelt biatch. Derogatory insult to a man, insinuating that he is better classified as a bitch than a proper man, or of course it could equally be an insult to a woman, since most women do not like to be called a bitch (or biatch), quite understadably.
That was such a bitch run.