I vaguely remember a physics teacher once telling me that it is impossible to suck water through a straw that is longer than 32 feet because the air preassure is not strong enough to push it that high when you create a vacuum in your mouth. I know the mechanics behind sucking water through a straw, so that kinda makes sense to me. My question is, if it is true, would the straw have to be 32 feet high, or can it be on it's side across a table ( or something to that affect)? /edit for da_willem. my understanding of the mechanics was by no means worded correctly last time, please correct me if I am still wrong.