Dumpet
The trumpeting fart that occasionally comes at the start of a pooping session that announces the coming bowell movement to all within earshot.
"I wasn't sure if Phillip was going to be using the toilet for number one or number two, until his mighty dumpet shook the windows and echoed far beyond the four thin walls of the bathroom"
Dumpeter
A person who proudly announces to others they have to take a dump.
Timothy entered the living room and trumpeted to his friends and girlfriend, "wow, I have to take a fat dump right now," causing them to groan and roll their eyes. His girlfriend Tina replied, "you are such a nasty dumpeter".