Someone people turn to when they're sad who makes them feel better.
Dude, I was so unhappy about my girl, until I spoke to my serotonin donor who really helped me feel better
by jonfurstn1 November 27, 2009
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Someone who is so miserable they bring you down and sap your happiness.
Everytime I'm with that serotonin sucker brother of mine, I feel gloomy.
by Jonfurstn November 26, 2009
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When on the drug MDMA (Ecstasy) as serotonin trickles down your spinal cord someone stands behind the intoxicated and push all their muscles on their back upwards and into their head as the person receiving the serotonin bomb hyperventilates, they then rub their shoulders and have the person stand up extremely fast causing a burst of renewed serotonin.
I was getting into a bad roll and K gave me a serotonin bomb, I was better in seconds.
by TheRainbowPanda May 20, 2009
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someone or something that shows up when you're happy and sucks all your joy away.
we were having fun until the serotonin police popped up.
by catyalater May 23, 2020
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Noun. - To "milk" a persons spine by roughly rubbing their lower back all the way to the brain stem, normally when the recipient is in a "praying to Alla" pose. During this, as part of Raver tradition, a prayer to the rave gods is normally said by the person giving the serotonin shot. At the end the the giver pulls the receiver up on to his/her knees quickly and Vick's Inhaler is blow in their eyes (a sea-breeze) and the receiver is informed that they are free. The receiver generally goes limp and is placed on the ground to enjoy the effects.

NOTE: Only enjoyable if the receiver is under the effects of MDMA.
kandi kid 1: my rolls haven't kicked in yet...

kandi kid 2:do you want a serotonin shot to make your illy's pop?
by Đ☮PΞ ☆ November 20, 2009
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Someone people think is a fool.
The piece of shit thought the serotonin donor was there to say something funny instead of to let him/her know that he/she needed to tone his/her bullshit down.
by The Original Agahnim July 2, 2021
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