McBain is the fictional action movie hero played by Rainier Wolfcastle within The Simpsons, a long running parody of 1980s action stars voiced in the show since the early 1990s. Clips tied to the character circulate widely as reaction sounds because the over the top delivery contrasts with mundane settings like a classroom. The chalkboard scrape attached to his name spread through soundboards and short edits, where creators reuse it as a shorthand for painful lessons, bad writing and moments that make an audience physically recoil.