An abbreviation of the term significant other, less unwieldy, used to refer to someone who is more than a boyfriend or girlfriend, but not yet a husband or a wife--usually a co-habitating lover, with whom one shares a long-term sexual relationship. May be also be used as a gender-neutral term of reference for a same-sex partner.
"This is my Signo, Zachary."
"Why don't you meet us for dinner, and bring your Signo if you'd like."
A socially deficient, morally reprehensible, or intellectually inferior person. The term implies a variety of negative qualities, specifically unwarranted arrogance and levels of inadequacy that exceed classification as a Douche, a Douchebag, a Douche Nozzle, or an Über-scrote.
Jill: "Dick is a real douchebag!"
Jack: "No, Dick has attained such unprecedented levels of douchebaggery, that he's actually a Douche Gargler."
Jill: "Yep. That's Dick all right. A total Douche Gargler."