square milk jugs
... that because of difficulties customers had using square milk jugs , a Sam's Club offered lessons in how to pour them without spilling?
... that because of difficulties customers had using <b id="mwDSE"><a href="./Square_milk_jug" id="mwDSI" rel="mw:WikiLink" title="Square milk jug">square milk jugs</a></b> <i id="mwDSM">(pictured)</i>, a <a href="./Sam's_Club" id="mwDSQ" rel="mw:WikiLink" title="Sam's Club">Sam's Club</a> offered lessons in how to pour them without spilling?