Basically another name for Albus Dumbledore, the iconic headmaster of Hogwarts school of witchcraft and wizardry.
This name is given due to his sassy, iconic and bad ass qualities and his weakness for fuckbois and bad taste in men.
Minerva: It’s such a shame, Gellert broke Albus’ heart!
Severus: Dumblewhore? Well I’m not surprised.
Minerva: Ikr, our queen deserves better.