When playing an Online game, you have sudden bursts of lag, or are randomly disconnected. Usually when something awesome is about to happen, or when others are relying on you.
1. "Why didn't you heal the tanks?" - "Oh, I got comcasted."
2. "Sorry I shot you, I was being Comcasted."
3. "Why didn't you complete the mission?!" - "Meh, I got comcasted again."