An expandable container system including a container, an expandable nipple and a one-way valve. The expandable nipple is attached to the first end of the container and the valve is attached to a second end of the container. A counteracting bias force is generated within the container and a first fluid is drawn in through the valve by extending the expandable nipple. When the expandable nipple is released, the expandable nipple is biased back to an unextended state, and an increase in pressure created by the counteracting bias force induces a second fluid to flow out of an outlet in the expandable nipple.