when a female needs a favor, she can (literally or figuratively) shake a little ass. this means she can offer herself or something else of interest in exchange for this favor.
A term used in prisons because so much of it happens there it's no longer a big dill to them. Means that you only ass raped them once or twice ect. to show them who's boss but not all the time.
On July 24th it is customary to bed a sub ass bratty little shit. This means dicking down a submissive and intentionally annoying individual who uses teasing to irritate you but is not dominant to any degree.
Individual:*reading calendar* "it's july 24th, must be fuck a sub ass bratty little shit day!"
Sub Ass Bratty Little Shit: "isn't that every day~?"
Individual: "Fuck you"