When an annoying friend hits you in the shoulder several times as a form of endearment. You then return the affection with one massive bone shattering strike to the shoulder arm area in the form of collective service.
"I saved up all that affection you showed me with those little punches to the shoulder and reciprocated it all at once with collective service."
by JMoKC January 14, 2015
Get the collective servicemug.