Several in this thread talk about how it's possible to beat tests and guys offering to be tested anytime. No, just no.
The reason they make these kinds of "offers" is because it's not possible to make it happen from a practical standpoint. How is it going to happen, you go up to a guy and ask him to piss in a cup? Then he lets you take the cup to a lab? Lol, think about it. A real test that can be trusted and which can't be challenged requires a big organization and many impartial persons. Everyone knows these offers are never going to materialize.
Also, these idiots never really passed any tests. The IFBB is thoroughly corrupt, they never tested any samples except when they wanted to get rid of someone. The samples went straight down the drain. These "pros" definitely aren't smart enough to pass any real test, it's not about that. There is no test.
Lots of pros have said they believe this or that "natural" but these fuckers have really strange ideas about what natural means. Just some basic steroid cycles doesn't count as juicing... as in the case of early Coleman.