@szuberi, try seeing positive side of the picture as well friend... here, it seems that you only saw the glass of water as half empty.
It is the most busted bike you have ever seen ... agreed.
NOW, the positive side of the story is that he bought it for only 4k, which made the picture very bright and interesting. Why he didn't buy a better condition bike? most probably he did not have enough amount to go for that.
For the price he paid ... he is definitely a winner.
BTW, whenever a person is asking your opinion for his new purchase ... the poor guy/gal really is really looking for a reinforcement of his decision. You surely have the right to make him look stupid, clumsy or begger, you may even break his head, if you think its your right.
BUT, educated and courteous people really don't led down others, who are looking for your appreciation.
Sometimes I wonder why western nations are great nations, its only because they are courteous, educated, have respect for each other and the law, they are 100% dedicated to their fields of endeavors, they are honest in their dealings .... In short they are truly following the teachings of ISLAM.