Hugh Jackman will take his shirt off and pump his muscles with a total stranger for $25,000 in cold hard cash -- and it's all to help children with learning disabilities.
Jackman -- who's preparing to reprise the role of Wolverine in a new flick -- agreed to a workout session with the highest bidder for an auction to benefit special needs children at the Summit School in Queens, New York.
The actor tells EOnline.com, he wants to raise money so badly, he'll even work out with his shirt off if bidding goes over $25,000.
As of today, the highest bid is $12,500 -- and the auction ends Thursday ... so hurry up!
