Waking up with an erection. It's often associated with the need to use the bathroom upon waking up. Scientific term is nocturnal penile tumescence. There is no real scientific proof as to why men wake up with a erection although there are many theories. And by the way "dr. Pascalle" is a fake and an idiot. No such thing as hypervasodilation.

Means the same thing as Morning Glory
It sucks trying to take a piss when you got a morning wood.
by Urban Cock May 12, 2009
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When a guy wakes up with a woody in his pants.(Really hard to get rid of.)
"Giovanni how do you get rid of morning wood."-Enrique
"I look at a picture of your mom..."-Giovanni
"Fuck off."- Enrique
"Let me finish then I jack off, cause your moms a MILF."-Giovanni
"You're a ass."-Enrique
by Ej the prp April 17, 2008
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When you get a NARB (no apparent reason boner) after waking up, usually caused by a full bladder pressing against the prostate.
- Today I woke up with a boner the size of the Washington fucking Memorial.
- lol.
by ytfk dot com November 16, 2004
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an erection that occurs when you wake up in the morning
I woke up with a morning wood today.
by Light Joker August 29, 2005
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When a person (preferably a man) wakes up in the morning in an upside-down "T" position. Characterized by the largest, possibly most embarrasing erection ever to be witnessed. Also called "morning glory" and "pitching a tent." Ways of getting rid of morning wood include: counting to 100, visualizing your grandmother in a string bikini, and challenging youreslf to a friendly game of horseshoes (ringtoss if no horseshoes are readily available).
MOM: "Billy, wake up! Time to go to school."
BILLY: "God, mom, How many times have I told you to knock?!?"
MOM: "Goodness Billy, why did you pitch a tent inside your bed?"
BILLY: "I didn't mom. It's my morning wood. Now get out!!!"
by Don Andino February 2, 2006
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i had morning wood when i woke up ...
those damn fairys pitching tents in my pants again..
by meep meep October 28, 2005
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a boner or erection experienced when a guy wakes up in the morning.
damnit, fucking morning wood gave me a huge-ass boner and I'm sleeping in the same hotel room as my mom
by kilometeros July 11, 2008
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