What is a S&N?

Answer 1

HTH*

S&N Smile And Nod

S&NScottish & Newcastle (UK brewers)

S&NSmith & Nephew, Inc (orthpaedic and implant device maker)

S&N Shellenberger & Nordhaus, authors of "The Death of Environmentalism."
Michael Shellenberger is a strategist for foundations, organizations and political candidates.
Ted Nordhaus is vice president of Evans/McDonough, one of the country's leading opinion research firms with offices in Washington, D.C., Oakland and Seattle.

*hope this helps ;-)

Answer 2

Could you mean S&M? sadomasochism

1. sexual practices involving sadism and masochism: the gaining of sexual gratification by alternately or simultaneously enduring pain and causing pain to somebody else, or the acts that produce such gratification

2. combination of sadistic and masochistic tendencies: a combination of sadistic and masochistic sexual tendencies within an individual person, who may derive sexual pleasure both from inflicting and from enduring pain and cruelty

Answer 3

not sure but it might stand for Scottish and Newcastle, but i only know that from looking up S&N on the internet