Goofy animal video response

• Hilarity, in Internet-speak
• Line subsequently encountered again in Australia? That's funny
• Amused Twitter term
• Online hilarity
• Response to a funny meme
• Bit of online laughter
• YouTube comment word
• Kicks, on the Internet

Wiktionary Word definitions in Wiktionary
interj. (context Internet slang leet English) Used to express laughter, often in a sarcastic fashion.