Gigantism jokes
Your earlobes are so big, you can fit your mom inside of them 5000 times and still have room for more!
What's the difference between a Hippo and a Zippo?
One is gigantic, the other is just a little lighter.
So big that when you step, you break the whole galaxy.
Gigachad.
That forehead is so tall it can eat a plane! Open wide!
What should you do if you meet a giant? Use big words.
Your forehead's so big, Jupiter's moons look up to it.
If you shined a light on it, it would reflect and be a star in the Andromeda galaxy.
Your forehead's so big, it's the main foundation for the wall of China.
Your forehead's so big, it makes up half of the Milky Way's mass.
Your forehead's the reason why the Earth still spins.
A teenage girl got a summer job dogsitting for a gigantic English Mastiff. She spent hours with the dog, and walked a little funny when she got home.
"What are you doing all day?"
"Knot a lot."