Humour and play have many features in common, both of which are important aspects in children's lives. In this article the focus is set on the relationship between different aspects of children's self-concept, including their humoristic self-concept, and interest in learning, play and local cultural activities. Participants in this study were drawn nonrandomly from primary schools in Australia, Norway and the United States. The students in the sample were 8 to 11 years old and were recruited from the majority culture and from Indigenous groups in the three countries. Results show interesting relationships between the humour self-concept and gender. More boys than girls describe themselves as funny. In the majority cultures humoristic self concept seems to be related to interest in free play, free learning and free local cultural activities. Within the Indigenous groups these relations were not significant. There are reasons to consider most of the documented differences to be caused by dissimilarities between cultures, school systems, and how representatives of different cultural groups perceive and think about upbringing and education. In particular, the gender differences found call for further research.