The phrase comes from everyday Brazilian Portuguese internet speech, where “tem call” mixes Portuguese with the English word for a video or phone meeting. Short clips like this spread through chat groups and short-form videos because they capture a familiar work-from-home moment in a single line. Creators reuse it as a reaction sound rather than a full dialogue clip, and its appeal lies in that shared recognition: almost everyone has been interrupted by, or has interrupted someone else with, an unexpected call.