I know its Wiki---but sure fits Trumpy IMHO!!
ps--sorry kitty cat!!
Delusions of grandeur
For other uses, see Delusions of grandeur (disambiguation).
https://en.wikipedia.org/wiki/Delusions_of_grandeur
Not to be confused with grandiosity or illusory superiority.
Delusions of grandeur
Other names Expansive delusions, Grandiose delusions

A cat viewing itself in the mirror as a lion much larger than it actually is.
A cartoon illustrating the phenomenon. People with grandiose delusions wrongly hold themselves at an extraordinarily high status in their mind.
Delusions of grandeur, also known as grandiose delusions (GDs) or expansive delusions,[1] are a subtype of delusion characterized by the extraordinary belief that one is famous, omnipotent, wealthy, or otherwise very powerful or of a high status. Grandiose delusions often carry a religious, science fictional, or supernatural quality. Examples include the extraordinary belief that one is a deity or celebrity, or that one possesses fantastical talents, accomplishments, or superpowers.[2]
While non-delusional grandiose beliefs are somewhat commonoccurring in at least 10% of the general population[3]and can influence a person's self-esteem, in some cases they may cause a person distress, in which case such beliefs may be clinically evaluated and diagnosed as a psychiatric disorder.
When studied as a psychiatric disorder in clinical settings, grandiose delusions have been found to commonly occur with other disorders, including in two-thirds of patients in a manic state of bipolar disorder, half of those with schizophrenia, patients with the grandiose subtype of delusional disorder, frequently as a comorbid condition in narcissistic personality disorder, and a substantial portion of those with substance abuse disorders.[3][4]
Signs and symptoms................