I want an underdog

We have started a daily pilgrimage to the swings at the end of the block for some underdogs.  For those that are not familiar with the terminology, an "underdog" is a push where the pusher goes under the swinger thereby increasing the height of the swing.  As Stella puts it, and the picture shows, "you go really really high."

Stella also has a new tricycle that she rides to the swings.  As you can see in the picture below, it is pretty sharp.  It came with a tall handle off the back which allows an adult to assist with steering or propulsion, although Stella, like any self respecting two and a half year old, will not allow us to touch it under any circumstances.  She constantly peeks over her shoulder to make sure we are not providing any assistance.