Not only did he prove the Tooth Fairy doesn't exist, he also proved that he's a shitty parent who, for 3 days, didn't realize their kid missed a tooth.
Unless it's a front tooth, most people can't tell when a tooth is lost, and if the kid commited he wouldn't have even mentioned it being loose. Not noticing a lost tooth doesn't make someone a shitty parent.
Really? Have you ever seen a kid lose a tooth without complaining/pain/discomfort, in particular with the molars? I have two kids. Believe me. They complain(ed) about it.
Yes ? Unless it's a baby teething I've straight up never seen a kid talk or conplain about pain when they lose/are about to lose their tooth, and I have hella nieces and nephews that I see ALL the time.
And for that, even if he actually had some pain, he would hide that too