Fake Butts are also sold in the Market(Picture)

Lolest ooo,many guys go gaga at the sight of a lady with a well-endowed butts but the sad reality is that most times men are just being deceived by such ladies because some of what you see is just a product of fake packaging.No wonder there is this saying that one should not be carried away by what they see,But biko why are ladies deceiving men with these things...
How do you differentiate between fake and real?