chonkus
Incredibly large, could refer to fat or general size. Both a noun and adjective.
Did you see how big her thumbs were? Heckin’ chonkus.
Chonkus Maximus
Used to describe the biggest, fattest thing to ever exist. (Must be used to describe a living thing)
"Your mom's so chonkus maximus, she could end world hunger in all of the multiverses"