One word. Two meanings. That's what breaks them.
Not just a theme or reference — it must be a word with two simultaneous meanings.
Homophones — "wine/whine" · "souls/soles"
Homonymy — "bank" (financial + river edge)
Polysemy — "spirits" (drinks AND ghosts)
Morphological — "hissterical" · "calcu-LATER"
Idiom hijack — "stark RAVEN mad"
Phrasal homophone — "codeine" = "code in"
God name — "deeper than the OSHUN"
LACONIC +107 words or fewer
CONTEMPTUOUS +10pun doubles as a genuine attack
ZEITGEIST +10pivot on a recognizable cultural reference
EUPHONIC +10clauses end on a rhyme
THEONYMIC +15pun on their name directly
DOUBLE PUN +15two valid pivots in one blow
MULTI PUN +25three or more pivots
TRIFECTA +25one pivot, three simultaneous meanings
Meurydice is waiting.