All for One, None for You
Sometimes, the worst gestures done by other people can stay with you for years and years. In this person’s case, it was when a brother and sister (not the OP’s) were waiting in line for a ride at Six Flags. The sister told the brother she was hungry, so they stepped out of line and got a frozen lemonade.
But the brother only got one spoon. Imagine that: the sister was hungry, so the brother got a lemonade for himself. And no, he didn’t share it with her sister, as far as the OP knew. Siblings can be mean, but this guy takes the cake.