I hadn't! I had vaguely noticed the fun on the girls' section and lack thereof on the boys', but hadn't thought about it very much. I think the commenter's (can't remember her username and can't check as am at work) idea of boys' play being more serious than girls is interesting. From my work, I think that it may also partly be that girls' fun is more commercialised, so that it is encouraged to buy fun rather than just have it. Also that the work of femininity is couched as fun, whereas I think the work of masculinity operates rather differently. Thanks for pointing it out!