plain Jane(redirected from the plain Jane)
A female who is not considered physically attractive by societal standards. Betty always felt like she was a plain Jane, so she was very surprised when the most handsome boy in school asked her to be his prom date.
plain Janean unattractive girl or woman.
2002 Guardian [The film] assembles its stereotypes (the sexy exchange student, the plain Jane who's really a fox, the jock who is only dating her for a bet) then proceeds to gunk them all with a ton of scatalogical prankery.