What is Flr?
1.
Something to say when you reach a lull in an online conversation. This should be used instead of lol or some other filler word. One will notice that flr is short for filler. Flr can also stand for failure. Flr can indicate that the listener is bored or just doesn't have anything to say.
stupidscreename121: I just got a cat. And he's really hard to take care of. I'm wondering if I should get him spayed. I think I saw him hanging around other cats.
nichaelbluth: flr
It is clear here that person 2 doesn't care and wants person 1 to shut up. In order not to hurt person 1's feelings person 2 uses flr. In this case FLR is the equivalent of nodding while not listening to someone.
Example 2
bitemyshinymetalass: I'm Mom and I want to shoot down everything you say so I can feel good about myself. 'Cause I'm an uptight BLEEP BLEEP, Buster! You old horny slut!
michaellindsaygob: flr
In this case flr is equivalent to WTF.
See