Tarrasque killing challenge!

[Breaw]

Operation Matador, Get a portable whole and a bag of holding. Lure the Tarrasque into the portable whole through some method, perhaps abunch of 1st level commoners throwing things at it, once it falls in the hole, throw the Bag of holding in there. A rift to the astral plain opens up and everything in the hole (the Tarrasque) gets killed.

Assume the Tarrasque played optimally. Explain to me why the optimally played Tarrasque jumps in your hole?

Alternatly, one trained giant eagle (Or magic carpet, or fly spell, some method to get airborne) some method of making a rnaged attack, and time.

So, Trained Hippogriff (3000 GP), 1st level fighter with 3 ranks in ride (1000 XP), Exotic MIllitary Saddle (60GP), Longbow (75 GP), Lots and lots of arrows.
Lessee, 1 GP for 20 arrows, Tarrasque has 858 HP, with its damage reduction each arrow will only deal 1 damage and our fighter will only hit on a nat 20. So Statistically, every 20 arrows will deal 1 damage, so thats 858 GP.

The Tarrasque regenerates 40 HP per round. You will keep shooting at it indefinitely.

I feel neither of these are solutions to the challenge.

Stupendous man: Please (please) just post the link to that site, rather than cluttering up this thread with something only tangentially related.