It can be impossible to predict the direction of The Hollywood Reporter’s annual Comedy Showrunner Roundtable when a group of deeply funny storytellers sits down. In fact, had someone suggested that Vida’s Tanya Saracho, 43, would be giving her peers — including Barry’s Bill Hader, 40; Ramy’s Jerrod Carmichael, 32; and Shrill’s Ali Rushfield, 47 — a highly entertaining if deadly serious lesson in taco protocol during this late April conversation, we never would have believed it. The same could be said about the proper way to load a dishwasher (thank you, Forever’s Alan Yang, 37) or to slice butter (and you, Veep’s David Mandel, 48), and yet those, too, were among the many unexpected topics as this savvy sextet let loose, sharing everything from the secrets of the writers…