Fritz Leiber's "What's He Doing in There?" (short story, humor, free)

First contact the first Martian visitor to earth made was with a professor of cultural anthropology at his home. He soon asked to visit bathroom. But it's been hours since he's been there, & the question everyone in the family is asking is: "What's he doing in there?"

Answer, when they finally discover it, is of course funny.

Fact sheet.

First published: Galaxy Science Fiction, December 1957.
Rating: B.
Download full text from Project Gutenberg, Manybooks, or Feedbooks. [via QuasarDragon]
Related: Stories of Fritz Leiber.