Watch enough final tables, especially those featuring poker-player commentators immersed in the latest tournament strategy, and you begin to pick up on new, useful concepts. Sometimes these concepts can be a bit confusing to understand the first few times you hear them mentioned — case in point, the tournament-related concept of "ICM" or the "Independent Chip Model."
"He's acting like he's thinking... but really, he just can't call here. He would be committing ICM suicide."
That's something you might hear a commentator drop into the analysis, an observation that assumes the audience knows what ICM refers to and what it means to commit some sort of self-destructive act related to ICM.