Tonight I had the "pleasure" of waving off a last second shot that would've won the game for the visiting team in regulation.  Unfortunately, the shot was at least 1/4 to 1/2 second late and as soon as the horn sounded, I stepped up (3-person, C, opposite) and whistled and signaled "no good."  Closest one I've had, but I know I nailed it, even without replay 
 
Then I continued to whistle and signal until the visitors stopped celebrating.
They won by 7 in OT.  We drove through 240 miles of snow and sleet to work this one (roundtrip).  I would've given this one back had that been an option.