What is it?
The underwhelming answer: It is a drawing I made with graphite sticks while trying to have as blank a mind as managed. But it is also one way to illustrate “The Love Song of J. Alfred Prufrock” by T. S. Eliot. Eliot’s poem also refers to an overwhelming question–and then then next line admonishes, “Oh, do not ask, ‘What is it?'”
So one way to answer–or ask–an Overwhelming Question is to make something wordless, that gets people wondering how or why it came to be. Since your mission is accomplished with the asking, you need not provide an equally overwhelming answer.