The scene shows Bugs & Daffy at their house.
Bugs - Guess what ? I invented the time machine !
Daffy - That's a great news ! Lets test it !
Bugs - The past ! Here we come !
They came into a rocky place.
Bugs - Wow ! The past is surely nothing interesting ! Okay ! Future !
They came into a city of destruction.
Daffy - Where are we ?
Pete - The looney tune City !
Bugs - What has happened ?
Pete - Everything is destroyed in the world cause a green headed martian has destined to make this planet disappear forever.
Bugs - Wait, really ?
Pete - No, this is a film shooting !
Bugs - Let's go back !
Porky - W-w-where have you guys b-b-b-been ?
Bugs - Whatever!