His train is always right on rhyme. Paul Pesante, a longtime conductor on Metro-North’s Hudson Line, has become a minor celebrity among the commuting crowd with his reliably witty rhyming announcements. “The next stop, we’ll do our thing, the next stop is Ossining!!!” or “Be happy, be merry, the next station is Dobbs Ferry!!!” he’ll shout instead of the usual scripts. “I’ve got a rhyme for every stop on the Hudson line.