Fake high speed photography

Tonight I was feeling creative but didn't have too much time . I set up the sound activated flash trigger wired to two Nikon SB800 flashes set at 1/128th power . They fire at 1/41000th sec at this power .
Then I put my subjects on a wooden table and hit it from beneath with a hammer .....

It's nothing amazing but to someone who doesn't know how it was done it could look like really high speed photography :)