A Dud is what you call someone if you find them extremely attractive, this can be used in both straight and homosexual terms so if you're best friend who is a guy forgets a spelling (or pronounces it wrong) then they are a raging homosexual
Male 1: you are a cool dude
Male 2: hahahaha you're a raging homosexual towards me
Male 1: I know I am
Snoop dogg: I don't know what I'm doing here dawg
A Dud is a very unattractive stud or butch lesbian.
"Look at that Dud over there"
A person who has the potential to be of much like-ability and depth but falls short of said things, causing disappointment and a stop to any further buildings of that friendship going forward.
I really thought she was cool when I met her at the bar last night, but when I hung out with her today she kinda turned out to be a dud.
dud means you on that good stuff
mallaboo: bgs fine asf
bgs: u onnat dud