" self-imposed "

 [ "self-imposed exhale" ]

1: Where you are trying to hold in a deep breath but then unintentionally do something that obliges you to "pop" whether ya want to or not.

  * e.g.,  ... I was competing with a couple of friends to see who could hold his breath the longest, and I was reading the daily newspaper-comics to distract me from my respiratory discomfort. Then I read a cartoon that really struck me funny and so I hadda laugh --- talk about self-imposed exhale! 

 [ "self imposed pout" ]

1: The fishy faced pout that girls do when taking pictures of themselves either in the mirror or holding the camera out in front of them.

  * e.g.,  ... She can't ever take a picture without a self imposed pout... 

 [ "self-imposed Rick Roll" ]

1: The act of Rick Rolling yourself just because you have that damn song stuck in your head.

  * e.g.,  ... "Dude I got fuckin Rick Rolled again." "It's happened to me so many times now i just have self-imposed Rick Rolls."