A step mother who tends to control people who they have no right to control, such as step children. The step bitch is known to control the biological father of said children to a point of totalitarianism within the household.
"Tom told me that the lady his dad just married is turning out to be a HUGE controlling step bitch!"

"I can't believe Carrie, what a step bitch, jeopardizing my relationship with her step daughter!"

"My step bitch is making me do all the chores because she thinks I don't do anything!"
by Daniel Rodrigues October 15, 2008
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One's woman on the side, whom lacks significance and/or priority.

Also, it can signify an unimportant person, whether male or female.
Don't worry about Tanisha. She ain't nothing but my step-bitch.
by Toyin Oluwole December 12, 2007
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A girl, who when dating is constantly trying to escalate the relationship prematurely by being a boss woman or acting like its a done deal.
This is a high stepping bitch thinking I am going to spend the weekend with her parents.
by GChild July 25, 2014
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One of the 3 magic words, "please," "thank you," and "step off Bitch."
Used to tell somebody to chill or to step down
"hey, you can't go in there"
"step off bitch I'm over 18"
by Relapse2013 December 28, 2014
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Usually directed to a person who is being hostille to another. Used to inform the hostille person to behave and act in an appropriate manner, or give respect.
I told you too step of bitch, before I knock you out!
by James/Skeeter/Drex March 16, 2003
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To tell a person of the female variety to get out your way, or stand down.
Girl: "Where u just lookin at that other girls ass?!"

Guy: "Step off bitch! I do what I want!"
by ukfxjesus March 07, 2012
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