Heavy anal flow resulting from excessive alcohol consumption often accompanied with severe pains
Christ, I have got some serious beeriod pains right now.

I neet to go and have my beeriod...
by goosewing April 5, 2006
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A beeriod is the passing of an awkward, uncomfortable and sometimes painful poo which occurs the day after a nights or days drinking!

This can happen all at once, or happens throughout the day, where one is said to be on their beeriod. It has many nicknames such as "having a black baby" or "burning the whole off myself"

It has many side affects such as:
Screaming
Scratching
Farting
Saying, "Hot, Hot, Hot"
Being irritable
Stomach cramps
Increase in waist size
Very smelly shits
And being fidgety

Guinness one of the leading factors of a beeriod, is so heavy that beeriod symptoms happen almost immediately! Since the smoking ban in Ireland, this has proved quite a difficult problem as pubs are becoming more potent in the flavour of beeriodosity, a gas more dangerous than tobacco!
Example 1:
Guy #1: Hey where are you going?
Guy #2: Oh man I gotta take a beeriod.
Guy #1: Oh fuck, I am staying well away from that toilet!
(20 minutes later)
Guy #3: Jesus Christ, who just had their Beeriod?!

Example 2:
Girl: Ugh, what is that smell?
Guy: Sorry babe, I'm on my beeriod.
by Kevin and Kielty October 27, 2010
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The runny, really smelly shit you take after a hard night's boozing.
"Oh man, I just took the worse dump. I think I'm on my beeriod."
by Damo the Lamo March 6, 2008
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beeriod (n). Weekly malady suffered by
men after a night on the pop.
Symptons include headache, moodyness and a
bloated stomach.
"Leave me alone,
woman, my beeriod started this morning."
by C February 24, 2004
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Noun. After a drinking session, one may expect the ramifications occuring the morning after, where you flush out the previous night's alcohol through your poo. These Beeriods are often sloppy, and smell terrible.
Joe: Dude, I am so wasted right now, I am not looking forward to getting my Beeriod tomorrow!
by Buffturtles November 28, 2009
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A beeriod is the liquid-like crap you take the morning after a heavy nights drinking. The cause of the beeriod can usually be identified as the consumption of a lot of cheap larger.

The odour released when having ones beeriod is potent and unpleasant, to avoid side effects such as regurgitation or gagging, it is advisable to carry a can of air-freshener for the duration of the beeriod to use at ones discretion. It is customary to inform ones flatmates that one has had ones beeriod so they too can avoid the fallout.
A-Wheres George? B-Oh he's just having his beeriod. He drank a lot of cheap larger last night.
OR
A-George didn't look well this morning. B-It's OK he's just on his beeriod. He drank a lot of cheap larger last night.
by h00ty56 March 20, 2009
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See "hangover". Feeling like shit after a long night of drinking.
A bloody mary should cure my beeriod.
by Jason Spencer December 20, 2003
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