The phrase describes a specific instance of negative audience reaction directed towards former President Donald Trump during his appearance at the Super Bowl. This reaction manifested as audible disapproval from a segment of the attending crowd.
Public figures’ reception at large-scale events can be indicative of broader sentiment and provide a snapshot of prevailing attitudes within a particular demographic. Historically, moments of collective vocal expression at televised events have sometimes served as barometers of public opinion regarding the individual in question.