"Jessie" was an insult.
On one occasion, it was hurled by the public at members of the football club, Delchester United. Once the side's play began to deteriorate in 1977, the phrase, "they're playing like a bunch of jessies", was heard in the club's stadium on game days. It indicated that the football players were weak and ineffectual men. (COMIC: Doctor Who and the Nightmare Game)