Riddle

How can you physically stand behind your friend as he physically stands behind you?

Choose an answer

A.By standing in a circle
B.By using a mirror
C.By taking turns
D.By standing back to back.
Hint: It's a 5-word phrase with 20 letters, starting with "B".

Answer

By standing back to back.

Why this is the answer

Standing back-to-back means each person is simultaneously behind the other.

This riddle is filed under "What Am I?" Riddles and rated Medium.