1. A responsible adult acting out activities they deemed as fun as a child. Usually brought on by nostalgia.

Examples:
1. He was highly into his kidaulding, then called upon stage by his favorite band, Airo-Smith.
2. John decided to spend his summer kidaulding as a boycott at Camp Lake Orion.
3. Enjoying a large bowel of Fruity-Pepples and saturday mornig cartoons is her idea of kidaulding, on her days off work.

Kid(meaning:child)\- auld:(meaning: old/things of old).