Conceit is more than aggrandized ego; it is also a figure of speech, extended metaphor.
Take for instance these concluding lines to “Please Can I Have a Man”
Who, when I come trotting in from the bathroom
like a squealing freshly-scrubbed piglet
that likes nothing better than a binge
of being affectionate and undisciplined and uncomplicated
opens his arms like a trough for me to dive into.
Selima Hill. Collected in New British Poetry edited by Don Patterson and Charles Simic.
The oinkable moment is memorable.
And so for day 1165