Hmmph! It looks like the tour bus is skipping the South Shore of Boston completely! Just a short trip to Wollaston Beach in Quincy (do NOT go in the water!) to Tony's Clam Shop and I'm certain you'll have your fill of some delicious fried clams (with bellies for those who truly love fried clams, sans bellies for you wannabee clam lovers). From there, you could walk to Hot Rod Harrys for a sweet Italian sausage grinder, complete with fried onions and peppers.
Gawd, I hope that bus has "facilities" on board! :-)