Italian humor with a purpose

An Italian grandmother is giving directions to her grown grandson who
is coming to visit with his wife.

"You comma to de front door of the apartmenta. I am inna apartmenta 301.

There issa bigga panel at the front door. With you elbow, pusha button
301. I will buzza you in. Come inside, the elevator is on the right.
Get in, and with you elbow, pusha 3.

When you get out, I'mma on the left. With you elbow, hit my doorbell."

"Grandma, that sounds easy, but, why am I hitting all these buttons
with my elbow?

"Whaaaat, you two coming empty handed?"