F*&# translates as frog. (They know this because Zoe's favorite bath towel is a frog. Unless that towel is dirty Zoe usually gets out of the bathtub saying, "F*&#! F*&#! F*&#!")
F*&#er translates as finger. (Bunna and Biff first heard this after a checking out a board book about body parts from the public library. Zoe has a hand and ten f*&#ers.)
S*%t translates as shirt. (Zoe used to say "s*%t" as she crawled around looking for things to play with. Bunna and Biff now hear this most often when they try to dress Zoe in the morning. They originally thought she was angry about having a hard time getting her arms in the sleeves, but now they think she's just fashion conscious and doesn't want to wear that dumb s*%t.)
B^$%h translates as spoon. (Zoe can't say spoon. B^$%h is the closest she can get. Recently, however, she has cleaned up her language; she is more likely to use butts now to the great relief of her parents.)
Bunna and Biff are keeping a close eye on all her little friends just to see where she's picking this up. They have a pretty good idea. In the meantime they are encouraging her to broaden her vocabulary in the hopes that she will someday break the habit.
The culprits: Zoe and some of her potty-mouthed friends.