Last year, in August, someone posted a meme with a template of Sean Connery drinking a drink and saying his template was better than Kermit's. This sparked a fake "feud" between the two, and since then there have been lots of memes where people have been pretending they're rivals.
Here's the original meme that sparked it off:
imgflip.com/i/q26sk
And here's a memestream about it:
imgflip.com/m/Kermit_v_Connery_War
Hope that helps!