William: Lu-mi-nous..." no, no, uh, " irra-di-ant..." better...
A BUTLER holds out a tray of hors d'oevres. William stirs from his reverie.
William: Quickly, I'm the very spirit of vexation. What's another word for "illuminate?" It's perfectly perfect as many words go but the bother is nothing rhymes, you see.
(...)
Male Partygoer (reads William's poem out load): "My heart expands 'tis grown a bulge in't inspired by your beauty effulgent."

Fool For Love (Buffy S5,Ep7)

William (reading to his mother Anne)
Yet her smell, it doth linger,
Painting pictures in my mind.
Her eyes, balls of honey.
Angel’s harps her laugh.
Oh, lark!
Grant a sign if crook’d be Cupid’s shaft.
Hark, the lark!
Her name it hath spake.
“ Cecily,” it discharges from twixt its wee beak.

Lies My Parents Told Me (Buffy S7,Ep17)

Spike at the "Poetry Slam, Thursdays 4:00" finally finishing the poem he started just before he was embraced:
My soul is wrapped in harsh repose,
midnight descends in raven-colored clothes,
but soft...behold!
A sunlight beam
cutting a swath of glimmering gleam.
My heart expands,
'tis grown a bulge in it,
inspired by your beauty...
effulgent.

"Thank you. That was for Cecily. All right. This next one's called "The Wanton Folly of Me Mum."

Not Fade Away (Angel S5,Ep22)

Q: How difficult was it to recite William’s poetry with conviction?
JM: [Laughs] Not that difficult because I decided they were good poems! Early on, I really got into William’s corner and I wanted to fight for him and I felt protective of him. I had this phrase going in my mind ‘Effulgent is a good word.’ But I was also struck by how hard it is to write bad poetry well. There was one point when we were waiting on a re-write from David Fury because he wanted to extend the very beginning of the poetry to include a reveal shot and it took him forever. People were like, “We have to film this! This thing is on the air in two days, David!” And he was just like “Guys it’s hard!” He’s right! (Text)