I guess this is just Nate being Nate. Nate Robinson  continues to keep Celtics  practices loose, posting on his Twitter account this video of him dunking on Shaquille O’Neal . He also gave us footage of him walking  in Shaq’s shoes and a Kendrick Perkins /Shaq dance-off . I don’t know about you, but Perk looks pretty nimble here. Also, Paul Pierce  posted a video of Nate trying to guard  Delonte West  in Shaq’s shoes.