Sorry, I can't. I have never been to Colombia and have no knowledge of their slang. What we can do is apply logical deduction to discard the meanings you found.
He is obviously not saying that he is a lier, that is the one meaning easiest to drop. Perhaps he is referring at himself as a sugar can worker, but it seems highly improbable that anyone would include that in an escort profile, specially highlighting it as this guy does.
I may suggest a possibility, with no certainty. "Caños" is a very informal way to refer sometimes to weights and work out machines. I guess he is probably saying, insistently, that he is a gym guy. However, I have never heard this use before.