(1) What is a postdoc?
Answer: A postdoctoral researcher (or a postdoctoral research project).
(2) Australia Post and Telecom were created in 1975. What organisation did they replace?
Answer: Post Master General (PMG).
(3) What is the professional name of US singer Austin Post? (bonus: how did he come up with the name?).
Answer: Post Malone (bonus: he inputted his name into a rap name generator).
(4) What kind of post does a box assembly support?
Answer: Fence strainer post.
(5) What in 19th Britain was the difference between letters sent by mail and those sent by post?
Answer: Mail was sent overseas, post was domestic.