your contact names for each other

                                    

                                          
Let me know what you think. 
                          
Dean 
                          
On Dean's phone his contact name for you is Kitten because that is what he calls you and on your phone his contact name is impala because all he is so protective of the impala just as much as he is protective of you. 
                          
Sam
                          
On Sam's phone your nickname is speedy because you are a really fast runner and were so hyper as a child and on your phone his is nerd because he is actually a nerd. 
                          
Castiel 
                          
On his phone his nickname for you is Bumble because he calls you bumble bee and his nickname on your phone is baby in a trenchcoat, your uncle dean changed his contact name but you liked it so you never changed it.