No matter what card game you play, everyone does it. Instead of winning, as they could, they wait a few turns and taunt you.
I myself love doing it. I just did it to Munchy. I had a field full of Monarchs, and he had nothing, but 4 pieces of Exodia in his hand and a reincarnation to bring back the one in his grave (We were playing with Proxys). He draw, discards to activate reincarnation, and I Solemn it, just for fun. I then Snipe my own whole field, and finish him with D.D. Survivor
Do you lot do this much? Has it ever backfired? Have you ever had t been done to you, and taken it the wrong way?