The clip comes from GrogTV on YouTube and centres on the British slang phrase what a bloody tune, mate, used to praise a song you really rate. Short reaction lines like this spread because they can be lifted out of a longer video and dropped onto any track, regardless of genre. Editors and streamers adopted it as a quick stamp of approval for drops, throwback songs and fan edits, and its matey delivery keeps it popular even when the original video is not shown.