We're no lip readers.
But we're pretty confident that this Celtic ball-girl wasn't offering a congratulatory message to Clint Hill after he hammered home the rebound to rescue a point for Rangers on Sunday afternoon.
Rangers left it late to find the back of the net but they were value for their draw, having piled the pressure on the home side throughout the latter stages of the game.
Emerson Hyndman wheeled away in celebration, having forced the initial save from Craig Gordon.
But the goalscorer was left to celebrate through the netting.
It was there that we saw just how passionate Celtic fans are as a ball-girl behind the goal let Hill know exactly what she thought of him.
https://twitter.com/thedevilmumbles/status/840922300908220416
As we pointed out at the start of this article, we're not lip readers so we couldn't possibly suggest what she roared in the direction of the Rangers defender.
But eagle-eyed supporters on Twitter all had an opinion on what was said.
https://twitter.com/Bowlesie/status/840922002462523392
https://twitter.com/0742Nord/status/840921877312884737
https://twitter.com/ANother1990/status/840921652334604288
https://twitter.com/J50Claret/status/840923816352219136
