Noun
siggy (plural siggies)
(Internet, informal) A sig (signature used in posted messages).
I changed my name when I was about twelve because I didn't like being called Sue or Susie. I felt I needed a longer name because I was so tall. So what happened? Now everyone calls me Sig or Siggy. Sigourney Weaver
Siggy kissed his fingertips in a universal chef’s gesture, then rubbed his belly. Source: Internet
Siggy led Jesse to a window overlooking the courtyard. Source: Internet
Siggy often spent free afternoons with his girls in museums, here in the city, further afield whenever possible. Source: Internet