My 22 month daughter has started a peculiar habit suddenly. She will hold either food (apple, chocolate, not usually meals) or saliva in her mouth for ages, sometimes up to an hour and a half, then dribble it out when she needs to talk or drink. Depending on what is in her mouth it makes a terrible mess!!! I think this is her discovering a 'control' thing and she will stop it as soon as she started. Nothing seems to trigger it, ie attention seeking etc.
Has anyone else experienced this? Nothing will make her spit it out until she is ready to - even tickling!!