What's particularly moving about this 1966 advert, apart from the model apparently having his farts sniffed by crotch loving Debra from accounts, is the availability with any purchase of these Dacron, hold-pressed pants of a long playing record entitled "Contact! Sounds of Mod!" which features Bob Dylan and the Yardbirds.
There are three styles of cut available, with my faves being the Campus Cut pants, known as "Joyman" which in retrospect seems a bit gay.