DD is 2yrs, she doesn't actually swear in context, but as she doesn't pronounce very accurately we have:
Clock = "cock"
Stick = "dick"
Fork = "fuck"
Tick tock = "dick dock"
Amongst others, we had a particularly embarrasing visit to a big old house the other day, where she exclaimed loudly in a very echoey hall "Look a BIIIIIIIIG COCK!".......
Any other DC's out there with amusing/obscene misspronunciations?