When Ike's sticks the cocktail napkin in Lucy's cup holder, he pushes it in. It is clearly pushed down when the audience gets to read the note. Immediately after that closeup, it is clear the napkin is not all the way in the cup holder and Lucy is shown pushing the napkin down with her hand. Then the napkin is shown laying on top of the cup holder and Lucy pushes it into the cup holder using her drink glass.