At their next performance, Bankhead resolved to prove her point. In one scene, while her rival was engaged in a prolonged telephone conversation, Tallulah was to put down the champagne glass from which she had been drinking and make her exit upstage.
That evening, she carefully placed the half-filled glass in a precarious position, teetering at the very edge of the table, half on and half off... The audience -- gasping, riveted by the endangered glass -- completely ignored the other actress.
[Bankhead, it turned out, had surreptitiously affixed adhesive tape to the bottom of the glass!]