Do you guys have any training partners that quit with heavy weights?

I have a new training partner that quits and I've never seen anyone do it before.

I've seen new/skinny kids try too hard or a lifter get crushed by a weight that's too heavy, but never just straight up quitting.

I'm the motivator in my crew (yelling, slapping, etc.) and I can't get to this guy after months of yelling and motivation.

The other week I had to pick him up off the box and yelled @him about not quitting for a few minutes before he tried the weight again and got legitimately crushed (full effort).