I am going to attempt to answer this from what I have learned as my chapter of GSS isn't super "into" the calls/hand signs but the call is Wee-oop and the sign I think from googling is the same as y'alls because it is supposed to look like the "Wee-oop" (it makes a W and an O) but someone who has been in the organization longer/is a member of chapter that does use these things MAY be able to answer you better!
|