Riddle

When it comes to me, you go on red and stop on green. What am I?

Choose an answer

A.A traffic light
B.An apple
C.A cherry
D.Watermelon
Hint: It's a word with 10 letters, starting with "W".

Answer

Watermelon

Why this is the answer

This flips the usual traffic-light rule: watermelon has a green (go) rind on the outside but red (stop) flesh once you cut in.

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