remember he gets to act first on the flop when he raises from the BB like that. so unless you flop like 346 or a set or something, it can be really difficult to play postflop even in position. a pot sized OOP lead out is very common in this situation which adds to the difficulty since it's already a big pot. i even know a few guys that open push flop often when they RR from the blinds like that (no matter what they're holding) and i can't say that it's a bad play when they do it.

this scenario is more or less the squeeze play being put on you: you raise from EP, get a single caller and then it comes around to the blinds. one of them reraises you.

they blind can do this because:

-you (EP leader) will let the blind seat know if is beat by pushing/3betting back over the caller and the reraiser, since you would rather be HU there than against 3 post flop

-the blind seat knows that it's unlikely that the LP caller has a hand that could withstand a raise because he probably should have just reraised himself in LP anyway if that were the case

-he knows he can probably get a fold from a solid lead out OOP on the flop, and if you play back, he's probably beat

you don't need shit to make the squeeze play work, btw. you just need cajones and a sharp eye for when it works and when it's a bad time to try it.