Boss Coffee Mugs

coffee mugs
(coffee mug) a mug intended for serving coffee
A mug is a sturdily built type of cup often used for drinking hot beverages, such as coffee, tea, or hot chocolate. Mugs, by definition, have handles and often hold a larger amount of fluid than other types of cup.

boss
A person in control of a group or situation
emboss: raise in a relief; "embossed stationery"
A person in charge of a worker or organization
exceptionally good; "a boss hand at carpentry"; "his brag cornfield"
foreman: a person who exercises control over workers; "if you want to leave early you have to ask the foreman"