The School Teachers(1974)

A pair of schoolteachers sign up for a $19.95 tour of San Francisco’s nightlife. Margaret and Constance meet their tour guide, Mr. Wally, a white pimp wearing shades and a fedora. He drags the two innocent virgins to a sex club and feeds them special drinks called San Francisco Whiz Bangers. After they are both totally drunk, they become part of the show.