Is it a concrete tube with a rope (or a cable) in front?

Good guess, but no, much smaller than that!

inside a light bulb?

Sorry no, it's outdoors..

Wow, this is a great one. My only guess would be that it is some kind of a vent (looks like a fan at the end of the tunnel), but what's the rope doing there, got me = )

hey the contest is over now.. so let us know what is this...

I put the answer in the description box, it's inside a wind chime!

This has something to do with head hunters, right?

A cowboy farm?

is that where they farm cowboys.............

Is it a jetty.......

Nope, lol not a farm or a jetty

part of a bridge?

Indeed it is adeincyprus. It's the top part of a suspension bridge

I am in love with these horns! Very grim.

Yeah it's definitely the Bart Simpson heads that add that WTH factor. GL!

Yep, but wth is Bart doing there?

espresso machine?

I think it pre-dates expresso machines.
The green is grass. If that helps!

let me guess.. the picture is flipped vertically and hhmm.. looks like the pic has been taken from low angle of a bicycle seat..

if not flipped.. the pic definitely looks to be part of bicycle..

Wheat Grass Juicer?

Iquraishi is pretty close. It is part of a vintage Villier motorcycle. The photo isn't flipped. The bottom horizontal cylinder is, I think, the air filter for the engine, the coil looks like it is the fuel pipe from the tank which loops round and goes into the bottom of the vertical chrome cylinder. beyond that, I cannot say.

I was thinking motorcycle

I see street signs = )

Haha yep you got it! it's street lights and while the shutter is really slow, you kinda move the camera in a circle and it's really cool

not really a 'wth'............this has been done many times here

Still a neat shot.