The infamous "MRW" (My Reaction When) meme, often attributed to a "Reply Guy" or "Reply All" format. 

For those who might be unfamiliar, the concept involves a humorous and exaggerated response to a hypothetical situation, usually expressed in a caption-like format below an image. The image is typically a GIF or a static picture with a funny expression or reaction.

The MRW meme often takes the form of: "My Reaction When [insert absurd or humorous situation here]..."

I must admit, I'm loving the Mrw-reaction.gif you shared – the dramatic and exaggerated "Mr. Wow" face says it all! Do you have a specific MRW scenario that cracked you up?