My little girl, three on Thursday, cannot say 'C/K/Qu' sounds but instead uses 'T' - it's quite normal for her to call her brother Torey (Corey) or want some Teese (Cheese) but hilarious when she says what a duck says.
Amazing how even though you curb your language around little ones they soon pick up on the one time you say something you shouldn't and repeat it at the most inopportune moments!
But it does sound funny/cute! 