(informal) confident and willing to get a job done.

plural of Obama-can

(idiomatic) In the best possible way, given one's circumstances and abilities.

Asks for permission to enter a room.

plural of hot water can

(historical) A can (often with a spout and handle) filled with hot water, used to warm a room, to keep one's feet warm, or to supply water for such things as shaving, washing, etc.

Used sarcastically to draw attention to a motive or agenda.

Synonym of look who's talking

(US) A cooked dish made by standing a prepared chicken upright on a partially filled can of beer and cooking it slowly in a barbecue or oven, so that the beer evaporates and permeates the meat.

A pseudo-telephone constructed from two tin cans (or paper cups, etc.) attached at the ends with string.