take paper towel, put it in a bucket or wheelbarrow with gasoline in it.
wait 3 days
take em out and huck em at somehting of his (car maybe), he'll never get it off.
let us know how it comes out.
if you do the standard thigh stretch, that might help a little bit, but other than that, ice it and put some arinca on it. and if the pain continues,i would get it checked out.