Basically another phrase for masturbation, except it's more fun to say. To "sling jelly" is to masturbate.
by Arkatron Duke Mariot December 25, 2013

A nickname for a Finnish light machine gun (Kk 62) mocked for its terrible capabilities and reliability. Often nicknamed by soldiers as the "Diarrhoea Sling."
by NaggerNick January 8, 2020

A sling in which a man wears from his neck down through his junk to hold it in place. Similiar to that of a Banana Hammock but a One piece from the neck to the male junk.
by Jonny cred:Pam December 14, 2010

When a man ejaculates into his hand and then proceeds to "sling" the seminal fluid at a girl's face in a manner much like the Amazing Spider-man.
by Ross Johnson April 13, 2006

A sweet alcoholic drink usually made with gin, Benedictine, cherry brandy, Cointreau, pineapple juice,fresh lime juice, grenadine, bitters
Also the name of a movie.
Also the name of a movie.
by TriciaC January 3, 2007

slang term for the mouth when telling someone to shut up. synonymous with pie hole, cum dumpster, etc.
by ravenflesh June 23, 2008

A nickname for the beautiful thing called a penis. It's a glorious name for a glorious dick, and if you've been told you have a sling dong, you're set for life.
Bria- "Have you seen Kendall's sling dong? It's amazing!"
Cristhian- "Please, Evan's sling dong is way better!"
Cristhian- "Please, Evan's sling dong is way better!"
by AyeEvansSlingDong July 18, 2014
