It's no Bob. It could be Robert or Rob. But, it is also Boo Butt.    That's what Robert Williams prefers to be called by friends and family, but Jon and Justin are ready for Weird Celtics Twitter to do its magic in creating a new moniker for the newest member of the Celtics.   Jon and Justin talked about the new archetype of a Celtics big man, whose athleticism and brute force know no equal in recent Celtics history. How Brad Stevens fits these strengths in with the current team will be fascinating.   In the show's second half, attention to turned to free agency and where Lebron James and Kawhi Leonard may end up. The worst case scenario, of both ending up in Philly, reared its ugly head and how the Celtics would contend. Does that possibility force the Celtics to become more competitive in going after Kawhi?   And in wrapping up the show, the CSL guys gave some love to Marcus Smart, in hoping he'll re-sign before the start of free agency on July 1. Jon also briefly talked about how Tweeting about his youngest son's adoration of Smart caught Marcus's attention and then pledged to send him a pair of game worn sneakers!    Re-sign that man, Danny Ainge!

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