Always wanted to know what "Blar" means? Well after being bored and searching its meaning, I found it. Here is the ?Urban Dictionary meaning, Copy and Pasted to you.

Blar is everything and nothing. The beginning and the end. The first and the last. You say it when you're bored. You say it for no reason. You say it for all reasons. You say it in the middle blar of a sentence. Do YOU blar? Use: Basically blar means anything and everything. It has many uses. you can say it when you are bored or for no reason. it is a noun, and adjective, and a verb.

blar
blar! (as said in frustration/excitment)
blar you
that's blar
what the blar
holy blar!
holy blarring blar!
oh blar!
blar it!

(ROFLOL!!)

You want a more detailed meaning?!!?

Universal expression used to indicate a feeling, sentiment, response, or question.
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Similar to the expression 'blah', with more power. 'blah' has a soft ending, while 'blar' has a more pronounced annunciation. Also, 'blah' usually is an association of a sentiment like 'whatever', 'blar' is not restricted to single context usage.
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'blar' can be applied in any context. Differentiating the meaning is dependant on the timing of the word, the tone, and or body language used to convey it.
q: "How do you feel right now?"
a: *shrugs shoulders* "blar"
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q: "What do you think of that?"
a: *blank look on face* "It's blar."
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a: "So I told her what I thought."
q: *puzzled look* "blar?"

Thats really it, there's more but I'm busy, today was Blog day.