A bangfluencer is usually a Californian influencer on TikTok that are sponsored the the energy drink company call Bang but never disclose the video is an advertisement for the drink. The original word came from a YouTuber called Danny Gonzalez when he reacted to these influencers
John: hey there’s a drink on the video. Are you gonna talk about it
Any bangfluencer: ...
John: what’s is this drink called Bang?
Any bangfluencer: ...