It refers to your dick. Particularly a dick that's large in size and is therefore sloppy when soft. Big+sloppy+dong= schlong
Guy1:"dude I can't wear those types of swimming shorts"

Guy2:"Why?"
Guy1:"coz my schlong is gonna be exposed coz it's so big"
by random_masterbater December 1, 2020
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A long 20 foot sword made of Spartan Hoplite penises that was used during the Trojan war. The sword could only legally be held by anyone 20 years and older. children had smaller versions.
Feel the wrath of my Spartan Schlong you Trojan Turd!
by Dash Dash 100 October 24, 2020
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Schlong + longing.
Expression when someone is desperated or in need for sexual activities.
When someone is longing for the schlong.
In that moment she was schlonging so hard for David her panties started to moisten
by Lucius Darko June 10, 2023
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When a penis is going down your leg and can be seen.
Peter: "Yo dawg he got side schlong"
Pedro: "Damn dawg that is long and curvy!"
by Tobiki08 May 17, 2022
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