Apartment House Joke

Joe rents an apartment in New York, and goes to the lobby to put his name on the group mailbox. While he's there, an attractive young lady comes out of the apartment next to the mailboxes wearing a robe. Joe smiles at the young girl as she strikes up a conversation with him. As they talk, her robe slips open, and it's quite obvious she has nothing under the robe. Poor Joe breaks out into a sweat trying to maintain eye contact. After a few minutes, she places her hand on his arm and says, "Let's go in my apartment, I hear someone coming..." He proceeds with her into the apartment, and after she closes the door, she leans against it allowing her robe to fall off. Standing there completely nude, she purrs at him, "What would you say is my best feature?" The flustered, embarrassed Joe stammers, clears his throat several times, and finally squeaks out, "Oh it's got to be your ears." She's astounded. "Why my ears? Look at these breasts, they're full, don't sag, and they're 100% natural. My butt is firm. Look at this skin, no blemishes or scars. Why in heaven's name would you say my ears are the best part of my body?" Clearing his throat once again, Joe stammers, "Outside when you said you heard someone coming? That was me."