Picking up a Bottle with a Straw ...

                Carefully bend back about a third of the straw,
                insert the bend of the straw into the neck of the
                bottle push down the straw until the end springs
                into the shoulder of the bottle, then gently lift  -
                and up comes the bottle.

                It needs some practive before doing it infront of
                friends and use a medicine bottle with a shoulder.