Sethly? Seth who? If it's Seth then you need no nickname, otherwise you already have a nickname, Seth.
we call my friend Seth, Zeth. and you could say Z.
Chinita
Well my friend is called Kristen her nickname is krissi.
Yes tottaly, he is my best friend since kindergarten
BFFL BFFL
kitty
Detta, for sure is a good nickname for Bernadette I have a friend who goes by Bernie.
smart
My friend Shayla goes by the nickname Shay, and sometimes we call her ShayShay.
Izzy?
snicker doodle
If your friend doesn't mind you calling them 'Alice the camel' then YES; if not then NO.