Clue Stick, Clue Train

[Grant Barrett]

These are popping up all over, related to people "getting a clue." Not all that new, I think: they've been on my radar for perhaps a year.
You might say,"Get on board the clue train, jerk" to someone who hasn't a clue what they're doing or maybe talking about, although it seems to usually be used in the third person: "He needs to climb aboard the clue train."

You might also say "That boy needs to be hit with a clue stick" to someone who doesn't have a clue. Maybe there's a relationship to "ugly stick."

Searches on the Internet turn up lots and lots of uses.