lag spike
When you're in the middle of a game or chat and your internet decides to take a dump right in your face for a few seconds. It's like your connection got hit by a truck and then forgot how to work.
My internet just gave me a lag spike during my final boss fight. I died 10 times because of it.
My friend got a lag spike in the middle of a heated debate. He said 'I'm not even talking anymore.'
I was in the middle of a raid and my lag spike made me look like a complete idiot.