Someone who performs poorly at any given task. Usually fortnite only up or fortnite box fights.
Person 1: "You are Mr. Lackluster."Person 2: "Don't call me Mr. Lackluster."
Comes from the word criticism. Used for when you absolutely demolish a kid in an fps.
"Damn bro I just got an ace." - Friend 1
"THOSE BITCHES JUST GOT KR1T1XD RAHHHHHHH!" - Friend 2