Derived in humorous reference to frontal.
This word has begun to gain popular acceptance since appearing in the U.S. sitcoms Friends and Scrubs. An earlier example of its use was in the episode of the UK sitcom, Coupling - "The Cupboard of Patrick's Love" (Series 1, episode 6, first aired 16th June 2000).
backal (not comparable)
- (humorous, neologism) Of, relating to, directed toward, or situated at the back.
- full backal nudity
- 2007 September 28, Bob Mondello, "Coming Soon, to a Theater Near You: Naked People", All Things Considered, National Public Radio
- Movie nudity has a long history in Hollywood.... And a lot of different kinds. Male and female, partial and full, frontal and ... backal?