I resorted to telling people "Click/touch the funny little group of three horizontal lines.", and if they still hesitated, "…Looks like an air vent.".

On occasions where I told them it's really called a hamburger menu, they all either looked like they thought the idea was nonsesical, or said as much.

…Don't get me started on apps that have multiple air vent (or elipsis) menus visible simultaneously.

Or apps that abuse the symbol further by changing the meaning from "menu" to "toggle a sidebar that may or may not have portions that act like a menu."

./table-flip