I haven’t seen This is Spinal Tap but I am a big fan of Harry Shearer’s Le Show, a weekly podcast. For the last few months, one segment has been about the misuse of so: People use it to start sentences that aren’t about consequences (“So we were standing there minding our own business. . . .”). I wrote Shearer to say he should change the name from Le Show to Le So. Not long after that, he ended the so segment with “here on Le So“.