Great puzzle! Loved.the cluing on it. solvable without being too straightforward.
I have one comment on 11D , the wording is just a little off. Rappers spit bars, as a noun. Thus, they could spit AT bars, meaning they're rapping while at a bar, or they could simply spit bars, but i dont think they can spit TO bars.
Very interesting linguistic question, and if i misinterpreted your clue, cant wait to be corrected!!! :)
Yeah, that's a very fair quibble! I was going for "spit bars" here, as you suspected.
Now that I'm thinking about it more, I'm realizing that "spit" by itself (rather than "spit out") doesn't commonly take a direct object (other than "bars") unless there's also an indirect object in the mix (e.g., "she spits her gum at them") so it's hard to think of how this would work with another example. But using that example with both direct and indirect objects, I think it would be grammatical to reference "what she does to her gum" (or alternatively, "what she does with her gum") even though you certainly wouldn't say "spit to gum" (or "spit with gum") directly. I think the clue works in the same way, but totally agree there is room for improvement!