And now, a poetical interlude

Little Miss Muffet,
Sat on a tuffet,
Eating her curds and whey.
Along came a spider,
Who sat down beside her,
And they had a pleasant chat that day.
You may have thought,
Though you should have not,
That she would be scared and flee.
But it would be dumb,
If Muffet had run,
‘Cause another spider she be.

what the hex is a tuffet