The panther effect 

A person that constantly talks himself up about pouncing on opportunities "hence the term panther" and making things happen , but inevitably fails to deliver and consequently snowballs into an array of broken promises and poor performances creating an effect to those around him

When Forced to drink to warm beer "The panther effect"

When a promise of delivering is not met the "The panther effect"

When I walk out the door without an umbrella and it starts raining "The panther effect"

The panther effect by Panth November 9, 2013

The Pink Panther Effect 

A strange phenomenon in which the following occurs:-

Man A: Boy the road sure is clear today
I believe I shall cross it
*A huge line of cars suddenly appears from no-where and starts to drive in front of the man*
-3 hours later-
Man A: I am still waiting for the right moment to cross the road safely.

Taken from a particular Pink Panther episode where the panther puts his toe on the road and cars appear from nowhere

Oh man, I was trying to cross the road but the Pink Panther Effect stopped me

The Pink Panther Effect by Zicks April 23, 2006