Abstract: A straw of telescopic construction permits the straw, when collapsed, to be no longer than a beverage container to which it is attached but long enough, when extended, to reach the container's bottom and extend beyond the top of the container. The straw includes means to prevent the inner straw being pushed through the bottom end of the outer straw and a structure which interlocks to positively hold the extended straws in extended position against inadvertent telescopic collapse. The structure includes an air seal at the straw juncture when they are fully extended.