The 'Leaf a Like' and 'Hisss' memes originated from the controversial YouTuber LeafyIsHere during his peak popularity in the mid-2010s. The phrase 'Leaf a Like' was his signature call-to-action for viewers to like his videos, while 'Hisss' became the battle cry of his dedicated fanbase, often referred to as the 'Reptilian Army.' This community would frequently 'raid' comment sections of other videos by typing 'HISSS' repeatedly to show their presence. The meme template typically features Leafy's iconic avatar or a green reptile character, representing the satirical and edgy commentary style that defined his channel. Today, it serves as a nostalgic callback to a specific era of YouTube culture and internet drama.