"You won't hit the enemy while blue locking if they're strafing left or right, try red locking"
"The enemy is coming at you directly! Blue lock and shoot as soon as possible!"
An explanation or excuse for something that seems unreasonable, unrealistic or just plain half-assed but is still accepted (like how blue raspberries don’t really exist but it’s still a common flavor).
“My sick note was so blue-raspberry but Mr Johnson let me sit out of P.E anyway- he just doesn’t give a shit”