Shitter Alert

Typically used to describe someone who screws up alot in a video game, or is generally just bad.

Player 1: That large group is on low health, finish them off.
Player 2: Bruh! I missed all of my shotgun shells!
Player 1: SHITTER ALERT! SHITTER ALERT
Player 3 and 4, who were silent for an hour: SHITTER ALERT!