Category:Adolescent boys smiling

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Definitions[edit]

1. Smiling boys (birth – 12 years (pre-pubescent))
2. Adolescent boys smiling (13 – 19 years)
3. Smiling men (20 – 59 years)
4. Smiling old men (60+ years)

Definitions come from, but are slightly modified from, the Physical stages of human life as found at Wikipedia:Human development (biology).