Idk stands for I don't know and because the f is next to the d, it is probably an accidental typo.
LFK stands for light french kissing.
balesadfklasfkasd;lfk;lzdkf;lsfvksd;lfksd;'lvksd;lvksd;lvk
The airport code for Angelina County Airport is LFK.
Boqueria Tapas Bar and Restaurant is located in the heart of LFK in Hong Kong. They offer a large variety of sea food and elegant unique appetizers and entrees.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern W-LFK--. That is, seven letter words with 1st letter W and 3rd letter L and 4th letter F and 5th letter K. In alphabetical order, they are: wolfkin