To fart into the open mouth of someone who has passed out, typically from consuming excessive amounts of alcohol. The lafrance is a party challenge: if a party patron has been so stupid as to consume more alcohol than their limit and to pass out as a result, other party patrons are welcome to try to position their posterior over the mouth of the passed out person and fart.
The origination of the lafrance may have been influenced by the movie Monty Python and the Holy Grail where a French soldier tells the English that he is going to "fart in (their) general direction."

A pubic hair piece. A toupee for the pubic area/genitals. In the 1700’s when mercury was used to treat sexually transmitted diseases (Gonorrhea or Syphilis) one of the side effects was the loss of pubic hair. To disguise this condition, that was not cured by mercury, a Merkin was employed.

A country in Europe bordered by Spain, Germany, Switzerland, and Italy.