[panel 1]
"Hello, inside cats," says Madam Spaghetti with her body language.
[panel 2]
"Good day to you," says Muffin. "Let us initiate the protocol of the pungent anal glands."
Muffin points her behind at the window.
[panel 3]
"Yes, let us extend to you the puckered heinie hole of friendship."
Vampire Cat also points his behind at the window.
[panel 4]
"Friends, friends! There's no need for such formality!"
Madam Spaghetti has stricken a funny anus-pointing pose as well.
Happy Valentimes, friends! I made you this card. You could totally print it out if you want.