<span>Switch's physical interface is something as the name itself suggests itself that it is a physical port to which you can plug in a cable or a wire based on its function and usage where as VLAN interface is no physical port but are created virtually when needed.</span>
Well a viral meme would spread very fast, it's a VIRAL meme which means it would spread faster than a normal meme. Even if it is contained in the 24 hour time period it would still become rather popular.