Charles Barkley appeared on The Dan Patrick Show last week to do what he does best: Talk, talk, talk and talk some more. One of those nonsensical tangents included a retelling of his time hosting Saturday Night Live in 1993 with musical guests Nirvana. And as it turns out, Barkley has a great pot story about the biggest rock band in the world at the time. “First of all, they were fantastic,”…