This was during a line brawl, when the opposing goalie - Ron Hextall of the Philadelphia Flyers - was pacing back and forth at the red line, challenging the Buffalo Sabres goalie Darren Puppa to a fight. The Sabres goalie was having none of that. He just chilled on his net, waving. If you want to fight him, you'll have to come to him.
Save for future use as an excellent reaction GIF. (s/t to twitter user @BigTaeng)