Me: So how did mom and dad's cat get along with yours? Sis: Not good. She has no eyes.
Me: Who?
Sis: My cat. She has no eyes. She has glaucoma and had to get her eyes removed.
Me: So, what's there instead?!
Sis: Nothing.
Me: What?! Nothing? Just two black holes?
Sis: Yea!!
Me: You should get your cat like that eye visor thingy worn by that blind dude on Star Trek.
Update:
When my sister told me about her cat with no eyes I thought immediately "that is what nightmares are made of," and despite potentially regretting it, I asked her to send me a picture of it.
Instead of a nightmare it's a totally freakin' cute cat: she looks like she's always sleeping basically!
And also, at night the cat puts on her devil costume and runs around town fighting criminals.