So you think you can reliably avoid to think of a pink elephant?
I can't, but I can reliably avoid thinking of any other thing that is presented in the form "Don't think of X" - I've trained myself to actively think of pink elephants in such scenarios (thus leaving no scope for thoughts of 'X'). It works rather effectively. I haven't tested it on extreme cases like "Don't think of boobs" though. That might be too strong to counter.
Maybe you could avoid thinking of pink elephants by actively thinking of boobs. ;-)
If it's worth saying, but not worth its own post, even in Discussion, it goes here.