Natty and Gnatty

Gnatty:
“I like your shirt. Did you just buy it? It looks so crisp and natty.
If you don’t mind my saying so, your old one was so ratty.”

Natty:
“That’s very kind of you, my dear, and you appear less fatty.
I noticed that your fly’s loose though—the room is getting gnatty.”

WordPress daily writing prompt (word highlighted above).