since he went back home mister's erratic green ball has been laying under the dresser where he used to rest his head. 
today i brought it out falulu. i said it doesn't bounce like a normal ball, lulu, it's rather erratic, but so are you, lulu! 
mister has a bounty of balls at home. he can't see them well enough outside for fetch. i'll still keep his erratic ball here for visits and to have something of his (r.made me remove his scrimshaw bone sculpture). and lulu can play the green erratic bouncing in the park.