(idiom) endlessly interesting; used to describe speech, writing, or works of art where wonderful charm and fun keep emerging

To have unexpected or deliberate side issues crop up, interfering with the smooth resolution of the main matter

(idiom) side issues keep cropping up unexpectedly; to encounter unexpected difficulties or complications

to be full of wit and refined charm; to be replete with humor and elegant interest

to sparkle with wit; to be full of witty remarks and humor

(idiom) to be full of humor and wit; spiced with wit