The phrase is Russian slang, with davai widely understood as come on or let's go, which explains why the clip works as a hype and hurry up sound online. Its exact original recording is not well documented, so it circulates mainly through user generated soundboards and reposts under the transliteration gandony davai. Short spoken phrases like this spread because they are easy to drop into unrelated footage, and the shouted delivery gives editors a clear audio cue for sudden movement, panic or a joke call to start something together.