Review: ‘Stand Up’ is solo show that asks the audience how we’re feeling; plus ‘White’ by Definition Theatre

John Kolvenbach’s “Stand Up” is, to say the least, an interactive show. (The title can be taken literally.) This 65-minute attraction, likely to appeal to fans of the neo-absurdist likes of Will Eno but less ephemeral, does not call on volunteers in order to do shtick with the audience. Rather, it attempts to genuinely interrogate what it means to come back, live, to the theater when, as Ortlieb’s character notes at the beginning, there is now the “siren song of streaming” with which to contend, along with other good reasons to stay home.