Definition: Okay, here's a short rhyme aiming for funny, clever, and slightly ridiculous, using "sexy" as you requested:

(of a person) Having sex appeal; suggestive of sex.

My toaster’s got a chrome so bright, It practically screams, “Sexy light!” Though bagels aren't impressed with glee, It’s the hottest appliance I see!

It’s the hottest appliance I see!

Definition: Okay, here's a short, silly rhyme incorporating “sexy-slim,” aiming for clever and slightly ridiculous:

Definition not found.

A penguin tried to join a gym, quite glum, He puffed his chest and said, "I’m sexy-slim!" Then tripped on ice, a slippery whim, And landed in a fish tank – utterly numb!

And landed in a fish tank – utterly numb!

Definition: Okay, here's a short, silly rhyme aiming for your request – using “sexymoma” as a made-up word (since it doesn’t exist!), and keeping it lighthearted and playfully ridiculous: Definition not found. A sexymoma bright, A fluffy purple creature, quite a delightful sight! It dances with pickles and sings opera low, And insists on wearing a sparkly rainbow glow.

And insists on wearing a sparkly rainbow glow.