We didn’t realize how competitive our Knock Knock team was until we started our company-wide “Ultimate Ping-Pong Championship,” aka “U.P.C.O.K.K.” (Yes, we did purposefully name it that just so we could use the acronym; and yes, the acronym does still make us giggle like little schoolgirls when we say it aloud.) We started the tournament in mid-February and ended it …