Constructor's CommentsI've taken several stabs at designing a themeless with FEEDING THE TROLL as one of the seed answers. I'm pretty sure the first themeless grid I designed crossed that entry with HOW 'BOUT THIS HEAT (where FOAMS AT THE MOUTH is in this grid). While I was super-proud of my work, it got kicked back to me with the note, "The phrase 'how 'bout this heat' yields less than 10,000 Google hits." Whoops. I really thought that was a thing people said. . . .
I'm very happy to have my debut in PSC with this puzzle, and I'm particularly grateful for David's patience as I reworked a corner that wasn't up to snuff. (The original entry for 1-Across was TIPSTAFF.)