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A phrase originating from British Columbia Canada describing the intense burning feeling experienced while taking a crap. A combination of diarrhea and the extreme sensation of fire coming out with the runs. This feeling can last for one bathroom visit or many visits. Commonly experienced after a very spicy meal.
"Dude, I had the worst case of fire-rhea last night after we ate all those hotwings. It felt like I was crapping out battery acid."
by Alexander A. February 08, 2007
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3
When you slyly cover your member in Cholula brand hot sauce, without your partner knowing, and proceed to show the booty hole who's boss, giving the recipient a bad case of firerhea for the next three days.
"That Bitch thought she was funny sleeping with my brother. So I gave her the firerhea."

"Nice."
by The Pioneer February 07, 2008
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4
Burning or inflammation recieved during or after diarrhea, typically from consuming spicy foods.
I found my chipotle burrito quite savory, other than the Firerhea that shortly followed it.
by Spacemonkey92 July 06, 2010
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5
A phrase originating from Western Canada describing the intense burning feeling experienced while taking a crap. A combination of diarrhea and the extreme sensation of fire coming out with it. This feeling can last for one bathroom visit or many visits. Commonly experienced after a very spicy meal.
"Dude I had the worst case of Fire-rhea last night after all that spicy food. It felt like I was crapping out battery acid."
by Alex-the-viking February 10, 2007
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