Someone who is not thinking clearly, or thinks something will happen that, in all likelyhood, will not.
guy1: So I'm thinking of asking Leah out. I think she might say yes.
guy2: Ummm, are you delusional or something?
guy2: Ummm, are you delusional or something?
by bandcampgirl183 September 26, 2005

An individual who is given evidence or proof of an event or some doing. And still refusing to believe.
by TrueLanguage June 17, 2015

delusional is when my friends hollering “ my man” about somebodies who is rlly not they man or saying “ he love meee” when they know that’s a damn lie , but imma stick beside my girls while they try to “ my man my man my man” they way back into they man life .
by therealestthings June 19, 2023

Delusional + Reality = Delusionality
When someone goes as far as confusing their own personal delusions with reality.
plural form: Delusionalities
When someone goes as far as confusing their own personal delusions with reality.
plural form: Delusionalities
When she told me that she swore she seen a glowing-pink horse with giant wings flying around town, I knew she was a victim of her own delusionality.
by Buck,, Neeley July 13, 2012

When someone believes something to be the exact opposite of what it actually is. Such as when someone believes that someone whom they stalk and harass both in person and in cyberspace, thinks only about him/her and misses him/her and loves and longs to be with him/her when in actuality they don't think anything other than you are a pathetic creep/jerk with no life who obviously has a lot to learn in the way of making and maintaining healthy relationships. These are often the same conceited creeps who make futile attempts to make the object of their obsession jealous because they are too ignorant to realize that people are not all like them and that people who are secure with themselves do not get jealous and see their actions as really really lame and pathetic.
ALL those men from El Minya are DELUSIONAL especially HeisamledbA, KalaM, RemA and the list goes on.
by Goddess12* December 17, 2013

Idiot: Harry and Hermione are like sooooo meant to be together...
Me: You're incredibly delusional... If you could read you would realise Ron and Hermione have amazing amounts of sexual tension...
Me: You're incredibly delusional... If you could read you would realise Ron and Hermione have amazing amounts of sexual tension...
by msweasley June 27, 2007
