Flash poopy 

When you leave your house feeling fine and you get to your destination, but all of a sudden you need to defecate (poo)... now.

Much like a Flash flood, except coming from the sphincter, and not the rain.

Martha: "I had a really great date, do you want to come inside? ;)"
Gunther: "Sorry Martha, I just got a crazy flash poopy going on here. Raincheck?"

Flash poopy by keendiggz August 11, 2010

Poop Flush Wipe Flush 

When your dump is so big that you have to poop and then flush and then wipe and then flush. Because the dump was so large the toilet couldnt handle flushing the poop and toilet paper all at once.

"My crap was so big that I had to poop flush wipe flush."

Poop Flush Wipe Flush by qwert333 January 9, 2011