The above chart is clearly satire, but that type of price action is an actual possibility (in terms of breaking new highs and falling afterwards, who knows).
Markets have always done what people never expect, and it NEVER fails to surprise me.
Strong bias on one side of a market is very risky business, and every time I have a bias, I'm reminded of how important it is to eliminate it. At the same time, conviction is where you can make a lot of money. The challenge is differentiating the two things, and knowing when to change your mind. To avoid being dogmatic, you need to identify exact levels (in life or trading) that go against your plan, or beliefs.