Most often used as a unisex nickname, it is considered in particular sub-cultures within the anglosphere as being synonymous with the English slur "cunt". The word is found most commonly (and ironically) used as slang for "dude" or "pal" in Australia and New Zealand, however it is less commonly used as a form of insult in the UK, Canada, and even lesser so in the US.
"You ever hear anymore about that one git named Sullie?"

"The nonced cunt who trashed the pub last week?"

"Bit redundant but yeah."
by Unexpected-Meep July 15, 2022
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If you choose to perform The Sully you must be very prepared and highly skilled. The Sully is only for the best of players in the hockey world. It allows them to score on every breakaway they have and finish it beautifully allowing them to get every rocket in the crowd.
Player 1: “Watch me score on that breakaway
Player 2: “Make sure you pull The Sully... just don’t miss the net this time”
by Captain Sully February 24, 2019
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When one says they will take their significant other to dinner but then bails at the last minute. This act is often followed by a 5 minute fast food trip and an unawareness of what they did wrong.
“He promised to take Cheyenne to dinner for her birthday, but he ended up Pulling a Sully, took her to Moe’s and went to the gym.”
by MickeyQ22 January 31, 2020
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When one gives another person a taste of their exhaliation from their asshole to their face.

(Common expression: 'Fart')
by Budda Sully May 4, 2011
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An average ginger penis. Very thick, but lacks length, although it is not a chode.
by Cicada July 9, 2021
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A derogatory term for Muslim woman which came from MULLA->MULLI->SULLI
Nazma, Rukhsana and Kausar are amazing sullis in town.
by Modi_gay_booom_boom August 4, 2022
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Incredibly great oral sex. Good noggin. Also known as “Skulli”.
Dude I got some great Sulli at Phi last night
by stanchbredman December 3, 2024
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