When you insert a lightbulb into your anus and then lick a 9 volt battery in order to illuminate the bulb.
It wasn't until I discovered the Reverse Fester that I began to appreciate the findings of Ben Franklin.
by AKelley29 June 13, 2019
Get the Reverse Festermug. noun. Defined as an American who either works at the Renaissance Festival or attends the Renaissance festival. If a man, he is out of shape and has long hair and a beard and makes Simpsons and Monty Python references constantly. If a woman, she has a muffin top and wears clothing that doesn't fit and does not shave her pits. Ren Festers also have a penchant for speaking in phony British accents while drinking Mead and Cider Beer. They also enjoy traditional Celtic music and dress, such as Druid capes and kilts. Ren Festers also like fantasy novels and play a lot of Dungeons and Dragons.
by Znara March 6, 2008
Get the ren festermug. by Andy Brotherton August 12, 2005
Get the festering gypsymug. When you have anal sex with a girl and you fall off to sleep with your boy still in and you wake up to a blow job.
by dyckdem January 8, 2008
Get the festering flutemug. by cuntmonkey September 13, 2003
Get the uncle festermug. "I'm so old, I remember when mainstream Republicans were basically decent people with differing views on economics and not a festering fucktangle of racists, Nazis and child molesters"
by The Worlds Greatest, Ever. August 12, 2018
Get the Festering Fucktanglemug. The disapointment felt when woken up by a blowjob only to look down and realize it is being administered by your uncle.
by Micro67 May 8, 2010
Get the festering nightmaremug.