• come to a boil

• an old boy

• all work and no play makes Jack a dull boy

• a watched pot never boils

• it boils down to

• boy wonder

• the old boy network

• boy toy

• boys will be boys

• a golden boy

• whipping boy

• that's a good boy girl dog

• boy oh boy

• make blood boil

• a pot-boiler

• blue-eyed boy