Simple Compound Words:
* Boyfriend
* Boycott (not directly related to boys, but the origin of the word is interesting - see below)
* Boyish
Less Common Compound Words:
* Boy-toy
* Boy-wizard
* Boy-king (from fantasy/literature)
Interesting Note on "Boycott":
The word "boycott" originates from a man named Captain Charles Boycott, an Irish land agent in the late 19th century. He was ostracized by his community for refusing to reduce rents, leading to a social and economic boycott. The term "boycott" then came to describe this type of social pressure.