When the lights came up at the end of Dave Harris’s disorienting Tambo & Bones, my companion asked me, “Am I real?” The satirical play teasingly calls attention to the artifice of theater and performance while emphasizing “fake-ass” set pieces, “fake-ass” backstories, and “fake-ass” racial identities. Even the composition of the audience at Playwrights Horizons seems to be fabricated. I wasn’t so sure I could give my friend an answer.