The sound comes from Breaking Bad, the AMC crime drama that ran from 2008 to 2013, in the season five episode Say My Name. Walter White, a chemistry teacher turned drug manufacturer, uses Heisenberg as his feared street alias, taken from physicist Werner Heisenberg. In the scene another dealer finally says the name aloud after Walter demands it, confirming his power. Clips of the exchange spread on meme pages and short video edits, and the short naming line remains popular for mock epic introductions and recognition jokes.