This is my dad's favorite dad joke.
A teenage T-Rex named Maynard and his father were out looking for dinner.
"Oh hey, dad! Look! A stegosaurus! That'd be good!"
"My Maynard son, no. That would be so hard to chew. There's so much armor there."
A little while later:
"Dad, check it. A big old nest of Pteranadons! Chicken tonight!"
"No, my Maynard son. They would fly too fast, and we cannot reach up there with our arms."
Finally, "Dad! Dad! Check it out! A herd of brontosaurus! It'd be so easy!"
"No, my Maynard son. Brontosaurus ribs take a long time to properly age before they're good eating. Everyone knows this."
The teenage T-Rex stomped and roared, "Daaad, what are we doing? There's stuff right here to eat! What the hell are you looking for, anyway?"
The elder T-Rex shook his head and said, "Carrion, my Maynard son."
