Where does absurd begin? And where does it end? If it ends ...

:)
The startpoint is in your thoughts
The endpoint is in your acceptance

it starts with non understanding of the meaning or point
it ends when you got the concept behind the bizzare

;) this is a great question!

Or an absurd question .... ;)

Taking it seriously, probably we could find it easy to detect the absurd.

If I say "my dog can fly", I do say something absurd like saying that a lake is full of wine instead of water ...

The difficulty comes when we deal with odd, the borderline between odd and absurd is no more so clear. I see a bit of subjectivity in it.

To talk to animals is common, normal, but what about to talk "with" animals? It's more common than we usually thing and owners of pets can tell us it's possible and real. From a linguistic perspective this is absurd because animals cannot use evolved language, but from the perspective of common sense it's even normal, not even odd.

Absurd begins when you realize everything people believe in is a bulk of rotten lies,that indeed this thing we call life is nothing but a cruel joke of mother nature.

Deep consideration Viktor. You remind me the Italian great poet Leopardi when he accused Nature to take all away from human life after promising so much during our first years of existence.

That's an aspect of his famous "cosmic pessimism".

Of course there are other perspectives about human existence, anyway that's a very "freezing" one.

"Absurd begins when you realize everything people believe in is a bulk of rotten lies"

No, that must be the reality and very nonabsurd level.
when you see the matrix, you will know its the real deal :P

And the "matrix" tends to hide itself ...

yep, thats pretty absurd :)