PHOTOS BY JACK GRASSA The Bickford Theatre at the Morris Museum in Morris Township presents Sam Jay Gold’s “All Vows” through May 8. Sam Jay Gold begins “All Vows” — which he is presenting at the Bickford Theatre at the Morris Museum in Morris Township, through May 8 — with a memory of sitting in his grandfather’s lap, on a boat. “He had this laugh: His belly would rise and fall as if the laughter was trapped inside his chest, fighting for a way out,” Gold says. It’s a vivid memory. It’s also, Gold quicky tells us, totally made up. His actual memories of his grandfather, who died when he was 4…