To sit on the toilet backwards, facing the cistern. This allows you to crap on the porcelain & not in the water. Why would you want to do this? If you were dragged along to a party at the house of someone you didn't like & you were bored.
"I just took a reverse munger in ya farken dunny bitch!"
by Andy J January 10, 2005
Get the reverse munger mug.