Morning Fart 

That one, special, loud, extra potent burst of flatulence that you expunge within the first hour or so of waking up. This kind of fart is usallly quite loud, may have a 'wet' sound to it, and is found to be quite scary for those who may overhear it, or smell it.

It ain't morning till I've let that morning fart loose!

Morning Fart by goldtoofblingbling November 6, 2004

Power Morning Fart 

The extremely powerful and loud fart one generates after waking up in the morning. It can happen either in bed, or while taking the morning pee. When it happens its extremely satisfying and personally amusing and is usually followed with a "WHOA!". Normally there is no smell, only hang time. When done in while taking a shit you can see the toilet water part or ripple.

Dude Matt, I ripped a power morning fart so powerful that it blew out my house windows and made the cat shit it's pants!

Power Morning Fart by Berrett February 25, 2008

early morning pancake fart 

To go and do a poo.
After having a big feed of pancakes for breakfast, you may feel like you need to fart, only to realise that there is more to it than just wind. So, you can use this expression to politely excuse yourself from the room without having to go into details of your need for sudden releif..

"Excuse me, I have to do an early morning pancake fart."

early morning pancake fart by PepeFlara August 21, 2006