Nicknames You Call Your Friends

This thread, unlike already existing threads, is to discuss nicknames you use for people other than yourself. Please elaborate; explain why you call them this.

I call my best friend Marissa "Luna", because her pen name is "Luna Plume", and it simply fits her personality. I call Tri "Mr. Not Sexy Man" because he claims in his profile that he is sexy, which he is not.

Please abide by the rules, as always! Smile
You can just use the general Nickname topic to discuss that aspect too :
http://worldbeyblade.org/Thread-Nickname-s-thread