A White Slussian is another variant on the popular White Russian cocktail. Owing to this, the ingredients vary greatly but the defining feature for this particular variant being that the drink is mixed then ice added and to finish it is mixed in a blender until a "slush" like consistency is achieved. Hence, "White Slussian"
The first record of this drink was on The Food & Cooking board on the website 4chan on the 21st of November 2012 at 3.15 GMT.

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