Mine is ‘pearly penile papules’ as it sounds like a fancy magic spell.
metacarpals cuz it sounds like some shit a european philosopher from the 19th century wrote a 2000 page thesis on.
Synesthesia. That or prosopagnosia.
Any of the big compound medical words are fun to say and construct IMO. Adrenocorticotropic, deoxyribonucleic, those kinda words. They seem big and scary but they’re quite descriptive and once you know the “formula” behind them it’s not too bad. Maybe not the most fun words but I feel good every time I can use one and deploy it like it’s no big deal (ie my mouth doesn’t fuck it up). It’s like executing a big combo with your mouth.
Sphygmomanometer
I recently figured out you can arrange the letters of this word to make a Letter Boxed puzzle:
P G A
S H
O E
T N
Y M R
“Endocannabinoid system”. It makes us sound like we just evolved a system specifically for processing THC.