1 definition by Ker Ber
The Clyde is a massive river in Glasgow. The insult is a response to someone who done something cruel, wrong, cheeky, or cheeky. The insult is often made in response to a wise cracker or a joke merchant who done or made fun of someone's expense. It's banter to say this to your friend as a joke when they piss you off or when they make a joke that's sick or funny at your expense. Also when some one doesn't give you what you want you could say this.
You're as wide as the Clyde. He's/she's wide as the Clyde.
by Ker Ber March 15, 2018