No one in Cat's family has fleas.
Sunshine: New belt?
Cat: Well, uh...why, yes, it is.
Sunshine: It's funny-looking.
Cat: No one in my family has ever had fleas.
Cat: Hey, you got dog food in my cat food.
Dog: Hey, you got cat food in my dog food.
This refers back to an old Reese's commercial, when two people are walking down the street and bump into each other. One of them exclaims, "Hey, you got chocolate in my peanut butter!" The other says, "Hey, you got peanut butter on my chocolate!"