Just thinking about what people call HIM
His father and L.J. call him Leroy, as does the rest of Stillwater
Shannon is the first to call him Gibbs and continues to their whole relationship
Many Marines and other people affiliated with the armed forces still call him Gunny years after active duty
including Mike Franks, who also calls him Probie, as well as others from his NIS days like Vera who still calls him that 22 years later
Diane brings back Leroy, whereas Rebecca seems to be the only one who has used J as a nickname
Ducky largely addresses him as Jethro, sometimes changing to his surname when referencing him to others
Jenny Shepard, Stephanie Flynn, Ellen Wallace, and Hollis Mann all go for Jethro, all women he had relationships with but he met at or through work (Ducky recounts introducing Stephanie to him and now they no longer speak)
Some people opt for the more formal Special Agent Gibbs and even Sir, like Jimmy Palmer or Dorneget when they're feeling especially intimidated or deferential (Special mention for the one time Abby called him Ma'am)
Phineas committed to Jethro Gibbs every time, matching with how he first introduced himself
Tony and McGee are partial to Boss but by the end it's truly become a term of endearment rather than any reference to hierarchy
While the three women on the team default to Gibbs in each of their era - Ziva calls him Boss the least, Kate in the middle, with Ellie most and she clearly picked up the habit from DiNozzo and Tim
Most recently we've learned about Ruth, Leroy's best friend (declared by her) and big sister (declared by him) , who first read his name in a newspaper and later off a lease
"You can call me anything you want"
