Male actor

"You mean, it ate Patrick too?"

- Female actress, on screen.

"It ate everybody."

- Male actor, on screen.

"What about Erica?"

- Female actress.

"It ate everybody!"

- Male actor, Bart and Homer

"...Stupid!"

- Homer

The male actor is an actor who starred in the movie The Monster That Ate Everybody, a movie that was playing at the Stardust Drive-In.

History
While Homer and Bart were driving Red Barclay's shipment to Atlanta, they stopped at a drive-in theater to watch a movie. During the scene shown, a man and a woman were talking to each other at a campsite. The woman asked if the monster had eaten Patrick, to which the man replied that "It ate everybody". The woman then asked if the monster had eaten Erica, to which the man once again replied, albeit more angrily this time, that "It ate everybody!" Homer and Bart chimed in on the last part, with Homer adding "stupid" at the end, refering to the woman.