Seems to make them nervous. Can't imagine why.

41 Hissterical Tweets About Fluffy Felines That Are Pure Catnip for the Hooman Soul 1

A Wholesome Bowl of 41 Funny Feline Treats for Cool Cats With a Whiskery Sense of Humor 2

Top 20 Cat Memes of The Week - Cheezburger Users Edition #344 3

32 of the Funniest Felines on the Internet and Meowrvelous Memes to Claw Your Way to a Purrfectly Wonderful Weekend 4

20 Sweet And Cuddly Cat Memes To Leave You Feeling As Cozy As A Kitten 5

Midweek Meowgical Moments With 24 Hissterical Cat Memes For The Purrfect Pick-Me-Up 6

Might as well... 1

32 of the Funniest Felines on the Internet and Meowrvelous Memes to Claw Your Way to a Purrfectly Wonderful Weekend 2

Every time 3

Some day, some way 4

Prank call 5

Don't mess with Momma 6