Did you eat yet? Let's go eat

Invite a friend or co-worker to lunch.

First ask if they have eaten yet.

Ya comiste?
Pronounced: Yah coh-mee-steh?
Translates to: Did you eat yet?

Follow it up with...

Vamos a comer.
Pronounced: Vah-mohs a coh-mehr
Translates to: Let's go eat.

Before you start eating say

Buen provecho
Pronounced: Boo-ehn proh-veh-choh
Translates to: Literally mean good benefit. But it's like saying "May this food be of good benefit."

Provecho!