[note: possibly subject to human memory errors]
You can interrupt Grunty at any time stopping the question typing No, wait, that's Tooie's Tower of Terror Quiz.
*pulls up marshmallow's SS run*
He takes the joker on the left:
UULLLLRRUUULUUUUULLUUURRRRUURU.
You can still use the standard "speed up talking" by holding button (A?) at the least. The first joker's worth taking obviously- one question is much less than the two minutes saved on minigames. Whether it's worth answering four additional questions (top left)
*returns from downstairs* Here, have a freshly sketched, converted to unicode map:
Finish
S
ISx SABxIΩSSΩ
J B B S
AAx♫δ S
I I S
B xBSI♫δBx
x♫δ♫S S ♫AJ
♫ I A I
x ABxBδ♫IABI
AIB♫S x
x x S
J AδxBδIB♫AB
B x B
I B J
ΩSJx♫BxA
I
B
Begin
I: Visual question
S: Death question
A: Witch question
B: B-K square, general question
♫: Music/voice question
Ω: 1up statue, no question
x: honeycomb, no question
δ: Timed minigame!
J: Joker: Answering question yields two jokerskip cards.
visual and music questions will take a bit longer because you must look/listen before you're allowed to pick an answer, consider.
edit: invisible walls to keep you on track are there after you've finished Furnace Fun too, btw. But you can freely roam the board (and get easy extra lives should that be your aim)
edit: I know you can speed up talking because marshmallow did it. I don't have any saves at a point that can play Furnace Fun- a pity because I thought it was the high point. (Lack of boss refight also was something I didn't like...)