(n.) seeds containing the chemical LSA which when ingested in large amounts (over 150) can cause one to have a psychedelic experience similar to LSD.
I tripped hard last night on morning glories.
by logos November 7, 2003
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Using the dreaded morning wood for good and masturbating first thing in the morning.
I hate having a morning wood, the only time it comes in handy is when I feel like having myself a quick "Morning Glory".
by Twunce March 15, 2010
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A particular kind of seed often used for its psychedelic LSA content.

MG seeds contain Lysergic Acid Amide, a drug similar in physical structure to LSD, but much more mild.

Described in detail by Youtuber Botany101
Morning Glory can get you seriously high man.
by Hexenhammer November 3, 2009
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The act of waking someone up by ejaculating on their face.
"Dude, my roommate slept in and didn't give me a ride to work, so I have him a Morning Glory. For some reason, he's really pissed at me right now."
by 1-uptheguy April 10, 2009
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Wait until an unsuspecting fool falls asleep with their mouth open. In the early morning hours - rip your underwear off, place your asshole flush against their open mouth, and fart as hard as you can.

This will usually result in the victim violently coughing, and having intense diarrhea.
Today I performed the old Morning Glory prank. My roommate Todd was coughing and shitting himself all day. What an idiot.

Yesterday, I tried pulling of the ol' Morning Glory trick, but my friends mom caught me ripping my underwear off and told me to go home.
by Bulbous Jack H December 20, 2011
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When you wake up. Look down. Realise you got some fat bulge. #erection #forthegang
Keith - Yo Jusdog, I had morning glory today.
Jusdog - OK.
by Dangli Wang October 17, 2018
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Noun
Common in all men.
When you wake up with an erected penis for no specific reason at all
I really need my morning pee, but it's so hard to aim with my morning glory !
by Legen- wait for it- DARY July 9, 2017
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