I was introduced to Pepto as a teen who’d consumed too much candy one Halloween.  My mother produced it to silence my whining about frequent trips to the potty.  When I asked what it was, she said, “It’s like concrete for your bottom.”  I pictured my dad with a trowel patching up the little brick wall my uncle knocked over while backing out our driveway the previous Christmas.  Can Pepto-Bismol do that?  If so, it was exactly what I needed, as my backside was a gushing faucet of…