its kinda like 'meh', instead its fleh. or u could use it to mean if someones just ok. or you could use it insted of hello. fleh really diz have a lot of meanings.
A more frivolous version of the word "meh".
Usually used if the person is too tired to make the "m" sound, so they do't fully close their lips and just make a "fl" sound.
(if you were wondering, yes, this originated in Florida)