The sweet but brief time after sex where the man is no longer horny.
I read a book yesterday while John's grace period was going on.
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The grace period is the range of time before or between significant occurrences, often spent anticipating the subsequent event to take place.
Between classes, students usually have a grace period before the bell rings for the start of the next class.

Approximately 3-6 pm is the usual grace period before hanging out at night.
by mjblan13 April 14, 2011
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The first 3-4 months of a relationship. Everything seems to be "perfect"- no problems, no arguments, and sex is a common thing. If The Grace Period was a smell, it would smell like roses. Once The Grace Period is over the person you once loved changes into the person you will soon hate. Sex becomes a thing of the past, conversing is replaced by arguing, hugging and kissing is replaced by slapping and pushing, and your relationship turns into a jail sentence. You ask yourself, "How did I get myself into this mess". Looking at your partner becomes as hard as listening to Nickelback. Your social life is non-existant, either because all of your friends hate who your partner has become or they can't stand the person your partner has turned you into. Once The Grace Period is over, it's only a matter of time before your relationship is as well. Only a few are lucky enough to maintain a successful relationship after The Grace Period has concluded.
Couple during The Grace Period Theory:

Male- "Hey babe! What do you want to do tonight?"
Female- "As long as I'm with you; nothing else matters"

*Male starts to smile intensely*
Male- "I love you"
*Female drops to her knees and unzips his pants*

Couple after Grace Period:

Male- *sighs* "What do you want to do tonight"
Female- "First of all, I'm the woman! You're suppose to decide what we're doing and where we're going! Secondly, it better be somewhere nice! I endured that cheap bull a few months ago but not anymore!"
Male- "Forget this! You shouldn't tell me what to do! I'm your boyfriend not your employee!"
Female- "Shut up and make me a sammich"

Couple after the relationship:

Female- "I can't believe I ever loved that loser, he didn't even make that much! God damn community college student"
Girl friends reply- "Yeah, girl- we told you from the start that he was a loser"

Male friends- "We told you, bro. She was ugly and a bitch"
Male- "Yeah, I know... But I kind of miss her..."
by DBAD101 August 28, 2011
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the short time frame when all the 3 major sports are still in season which is late october.

baseball is usually in the world series (at the end), basketball is just starting (beginning) and football is halfway done (the middle)
When the triple sport grace period begins, I'm not sure what to watch on tv!
by hardhitr3 September 9, 2009
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The two day period of time allotted between receiving a poke on Facebook, and returning said poke. Instilled in order to prevent sitting on Facebook for days.
Bill: "HAHA you haven't poked me back all day! I win!"

Andrew: "Dude, haven't you ever heard of the poke war grace period? I still have another day!"
by PokeMaster101 January 3, 2012
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A period after a Civilization Collapse where the survivors can live off of the technology and products of the destroyed society. After which, will deteriorate into uselessness.
The Grace Period will give rise to a generation of scavengers who will cannibalize the remains of the previous civilization.
by Posternal January 10, 2020
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The 1-hour period from at 1:00 to 2:00 AM on the second Monday of November where daylight saving will revert the time to 1:00, thus nullifying any failure of No Nut November during the period.
Your honor, that one didn’t count since it was during the theoretical nut grace period.
by TheBeato November 6, 2023
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