The sudden disappointment after you jam a fistful into your mouth and realize mom filled it with plain old boring Cheerios instead of honey nut.
Before the Tide Pods challenge, before the cinnamon challenge, even before the marshmallow mouth challenge there was the Tear Jerker challenge where you put as many Tear Jerkers in your mouth and waited to die or have the inside of your mouth peel off from the sour. This pic just makes you pucker.