Hit and Run Hugs

Being constantly surrounded by 5 to 8 year olds all day, I am frequently and increasingly aware of the intricacies of their behavior. Some obnoxious, others disgusting, amusing, or just plain bewildering. Many of their natural tendencies, however, are utterly endearing. One of such is what I like to call the "hit-n-run hug."
This maneuver involves a 5 or 6 year old running up and wrapping their arms around a teacher from behind, squeezing briefly, and then continuing to walk right past and continue their day with unpracticed nonchalance.
I imagine these little people to have filled to the brim with love, and they are forced to off-load it to the first available vessel - which is often me, a happy recipient.

But what a sensation! To give love and expect nothing in return. To my dismay, I feel it happens infrequently in the adult world. Have you ever felt a bucket of love swell within but were unable to release it? Perhaps it was a social barrier or a fear of rejection, but whatever reason stopped you, we can probably agree that love it mean to be shared. Give love to get love - that's what they say.

What would it take to allow yourself to give frequently and liberally without limitation?