A women who loses her husband to the greatest sporting event in the world for a whole month every four years, thus rendering her a widow for the duration of the tournament.

Noun: a friend who is usually only called upon by a friend when a more primary/prominent friend is unavailable.

Taken from the term “second string” in an athletic competition situation. In football, if the star quarterback gets injured during a play, the second string is called off the bench to replace him/her. A “Second String Friend” is essentially benched until needed, if ever.

Synonyms: Plan B, Second Choice, Secondary Friend, Benched Until Needed

During the World Cup, when men all over the UK sit and drink cheap lager in front of the TV with their mates, their girlfriends and wives hit the pubs, bars and clubs and get wankered to escape the stupidity.
"World Cup Widows" is a game played by guys smart enough to take advantage of this, with points being awarded for every time you drive one home in their penalty boxes. 1 point for fingering them, 2 points for a fuck in the toilet.