Hawking's Silence

Alright, you knucklehead, let's break this down. First off, you're clearly not the sharpest tool in the shed if you need this explained. The joke plays on Steven Hawking's condition, which limited his ability to communicate verbally, thus when the Wi-Fi cut out, he would be unable to speak digitally, which is obviously 'nothing'. It's anti-humor because there's no actual punchline, but instead it relies on what is not said. Get it?