Wag

[GSCole]

WAG was known to me.
http://www.acronymfinder.com/af-query.asp?p=dict&String=exact&Acronym=WAG

As was SWAG, as Simple WAG, but is not shown at the following.
http://www.acronymfinder.com/af-query.asp?p=dict&String=exact&Acronym=SWAG

And, YMMV, a popular 'statement' in discussion lists:
http://www.acronymfinder.com/af-query.asp?p=dict&String=exact&Acronym=ymmv

George Cole
Shippensburg University