In Overwatch, if the fall doesn't kill you, Mei definitely will.
When Reddit user NinjaDuck25 saw a Reinhardt refusing to give up the chase, the Mei player decided to create an ice bridge that would buy just enough time for both heroes to duel. Despite a few late swings of his giant hammer, Mei made short work of her opponent (as she so often does).
Trolling is often discouraged in gaming, but when executed just right, the results can be sublime. I doubt even the Reinhardt player who got owned in this instance could do anything but applaud Mei's perfect timing.
That last second Cryo-Freeze snowman taunt was simply the icing on the cake.