lag head
A lag head is someone who gets so nervous about lag that their brain starts to lag even when the internet is perfect.
My lag head cousin got a headshot and then started twitching like he had a seizure.
I told my lag head friend the game was running smoothly, and he said, 'You're lying, I can feel the lag in my bones.'
My lag head brother got first place and then panicked because he thought the game was going to crash.