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A dominant male, generally married with Children. Is well known for his promiscuous lifestyle and sexual libido. Much like a sailor has a woman in every port and takes at least 5 “business trips” per year.

All round sex god.
Wow, Decky is such a stud.
by Ryansonofdec November 01, 2019
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3
the biggest fucking dip shit u will ever meet. If u see a decky, be sure to run away as fast as you can to avoid being pulled in by the bastards seemingly nice personality. However if you are feeling courageous, try running up to the thing and giving it a super wedgie.
person 1: OMFGGGG its a decky!
person 2: wat will we do?
person 1: RUUUNNNNNNNNNN
by totally awesome person xoxo March 28, 2009
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4
Decky is the term used when one is so high on ketamine that they simply fold in half like a deck chair
You're soooo decky bro look at you all folded up like a chair
by DeludedLefthander October 03, 2019
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5
The slang word for a detention in the UK
friend: Where’s Chantelle?
other friend?: She got a decky off Mr Brandons earlier today.
by funnykid8 December 08, 2019
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