Oh, man, I'm pretty decent at this. Man is a favorite of mine. You may be thinking "that's not neutral". To that I say, yuh huh. Pardner, obviously said in some kind of Arthur Morgan impression (quality irrelevant). Buddy, if you want to be dismissive, as in "Yeah, sure buddy". Bitch, to be used with close colleagues. Also somehow gender neutral. Diva is pretty universal. It has the added plus as a quick little homophobia check. Girliepop, similar usage as diva. Pookie/ pookie bear, to be used with close friends and partners.