by Yr_Hud December 26, 2023

when you’re old enough to not understand things targeted for young audiences, or when you’ve reached an age that is, relative to your friends, old
by maybemiro May 19, 2024

To describe someone who's older or getting old yet still badass or strong in their age. Derived from the prehistoric fish "Dunkleosteus" and the slang for an older person "Unc"
Tom: "Dude why'd your dad reference Metal Gear? How old is he?"
John: "Old enough to have fought in Mogadishu"
Tom: " Total Unc-Leosteus"
John: "Old enough to have fought in Mogadishu"
Tom: " Total Unc-Leosteus"
by ELRaptor08 October 14, 2025
