B2S meaning in Internet ?

Back to School is a 1986 American comedy film starring Rodney Dangerfield, Keith Gordon, Sally Kellerman, Burt Young, Terry Farrell, William Zabka, Ned Beatty, Sam Kinison, Paxton Whitehead and Robert Downey Jr. It was directed by Alan Metter. The plot centers on a wealthy but uneducated father (Dangerfield) who goes to college to show solidarity with his discouraged son Jason (Gordon) and learns that he cannot buy an education or happiness.

Author Kurt Vonnegut has a cameo as himself, as does the band Oingo Boingo, whose frontman Danny Elfman composed the score for the film. The University of Wisconsin–Madison was used as a backdrop for the movie, although it was called "Grand Lakes University." The diving scenes were filmed at the since-demolished Industry Hills Aquatic Club in the City of Industry, California. The competition scene was parodied in the music video for Canadian rock band Sum 41's 2001 single "In Too Deep".

Before the end credits, the message "For ESTELLE Thanks For So Much" is shown in dedication to Estelle Endler, one of the executive producers of the film, who died during production. She was Dangerfield's long-time manager, who helped him get into films such as Caddyshack.