>>Don't think I ever heard something like that in Russian. May be it's some Belorussian saying...
>>
>>"Svoimi zubami mogilu roesh'" - but I just invented this, don't think I heard it.
>
>I heard: "Kto smel, tot s'yel"; though the idea is the opposite.

I think I heard this too. And, of course, "kogda ja em, ja glux i nem" or "polozhit' zuby na polku" or "sytyj golodnogo ne razumeet"