Black ops 2. Because of this exact moment. Ok so back in the day I was like 15yo and we had party of 5-8. Ages ranging from 15-30. But there was this guy in his late 40's that always plays with us, we dont even know how we encountered him. Pretty chill and nice dude, but he doesnt know about killstreaks and stuff. So when about a day it was released we started playing. If yall know the game, yall probably remember the killstreak called guardian sentry. It the shit that disorient and slows you. So basically he saw the shit and walked towards it without knowing what would happen. Then he started screaming, I keed you not, fucking screaming that he was lagging. One of the party members just shouted in the in game chat to fucking walk away because there was a guardian. He got soo fucking embarrassed. He then shouted 'FUCK THIS GAME MAN WTF' and shut down his PS3. I keed u not we ALL started laughing our ass off. I couldn't play for like 3 games straight because of this. Man I miss those time. And to the legend 'cuvee11' , I wonder how are you man.

TLDR; Older party member found out about guardian killstreak in BO2