I come from a family of girls, the only DGC have been girls. We are a very female family.
My lovely niece who is 23 bought my two boys Jenga for Christmas 'to help them concentrate' .My boys are proper boyish boys and I think that when she visited in the summer she was a bit
about their general boyishness. In fact my whole family are a bit
about how boys are, having only had experience of us girls who would sit and read etc
I really hope that when she has DC she has proper boys and then she will realise that game of Jenga is not going to make a 2yo sit still and 'concentrate' 
Incidentally we all had a ball playing Jenga with 7yo DS1 who can concentrate with the best of them!