The ultimate declaration of unrivaled excellence. Synonyms include 'cool,' 'rad,' 'awesome,' 'abgefahren,' 'primordial,' 'bangarang,' 'wicked sweet', 'most excellent,' 'most triumphant, etc.' Derived from a Shakespearean character in A Midsummer Night's Dream.
Do you listen to Queen?

Yeh, I think they are Theseus!
by Jackie Deram May 24, 2005
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A person who attempts to act like an internet bully, but in reality makes himself look like the sad little idiot that he is.
guy: Did you see him fail at trolling?
girl: yea he must be a theseus.
by sonu89 April 19, 2011
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A band whose current lineup contains none of it's original members. Named after the Ship of Theseus.
In Flames should have renamed themselves Band of Theseus after Jesper left, he was their last original member!
by Ganondox April 13, 2019
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1) A metaphysical thought experiment involving a boat that is slowly repaired over time until all the parts are new.

2) Asterius
what are your feelings on the Ship of Theseus? Personally, man, that dude and that minotaur are definitely making out.
by Salvorrrrrr October 07, 2020
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When a band has more past members than current members.
That band hasn't been good since they passed the Theseus threshold .
by Getzby1021 January 14, 2021
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